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Kubiak A, Voronkina A, Pajewska-Szmyt M, Kotula M, Leśniewski B, Ereskovsky A, Heimler K, Rogoll A, Vogt C, Rahimi P, Falahi S, Galli R, Langer E, Förste M, Charitos A, Joseph Y, Ehrlich H, Jesionowski T. Creation of a 3D Goethite-Spongin Composite Using an Extreme Biomimetics Approach. Biomimetics (Basel) 2023; 8:533. [PMID: 37999174 PMCID: PMC10668986 DOI: 10.3390/biomimetics8070533] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 11/03/2023] [Accepted: 11/06/2023] [Indexed: 11/25/2023] Open
Abstract
The structural biopolymer spongin in the form of a 3D scaffold resembles in shape and size numerous species of industrially useful marine keratosan demosponges. Due to the large-scale aquaculture of these sponges worldwide, it represents a unique renewable source of biological material, which has already been successfully applied in biomedicine and bioinspired materials science. In the present study, spongin from the demosponge Hippospongia communis was used as a microporous template for the development of a new 3D composite containing goethite [α-FeO(OH)]. For this purpose, an extreme biomimetic technique using iron powder, crystalline iodine, and fibrous spongin was applied under laboratory conditions for the first time. The product was characterized using SEM and digital light microscopy, infrared and Raman spectroscopy, XRD, thermogravimetry (TG/DTG), and confocal micro X-ray fluorescence spectroscopy (CMXRF). A potential application of the obtained goethite-spongin composite in the electrochemical sensing of dopamine (DA) in human urine samples was investigated, with satisfactory recoveries (96% to 116%) being obtained.
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Affiliation(s)
- Anita Kubiak
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland; (M.K.); (B.L.)
- Center of Advanced Technology, Adam Mickiewicz University, Uniwersytetu Poznanskiego 10, 61-614 Poznan, Poland; (M.P.-S.); (H.E.)
| | - Alona Voronkina
- Institute of Electronics and Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner-Str. 3, 09599 Freiberg, Germany; (A.V.); (P.R.); (S.F.); (Y.J.)
- Department of Pharmacy, National Pirogov Memorial Medical University, Vinnytsya, Pyrogov Street 56, 21018 Vinnytsia, Ukraine
| | - Martyna Pajewska-Szmyt
- Center of Advanced Technology, Adam Mickiewicz University, Uniwersytetu Poznanskiego 10, 61-614 Poznan, Poland; (M.P.-S.); (H.E.)
| | - Martyna Kotula
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland; (M.K.); (B.L.)
- Center of Advanced Technology, Adam Mickiewicz University, Uniwersytetu Poznanskiego 10, 61-614 Poznan, Poland; (M.P.-S.); (H.E.)
| | - Bartosz Leśniewski
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland; (M.K.); (B.L.)
- Center of Advanced Technology, Adam Mickiewicz University, Uniwersytetu Poznanskiego 10, 61-614 Poznan, Poland; (M.P.-S.); (H.E.)
| | - Alexander Ereskovsky
- IMBE, CNRS, IRD, Aix Marseille University, Station Marine d’Endoume, Rue de la Batterie des Lions, 13007 Marseille, France;
| | - Korbinian Heimler
- Institute of Analytical Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, 09599 Freiberg, Germany; (K.H.); (A.R.); (C.V.)
| | - Anika Rogoll
- Institute of Analytical Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, 09599 Freiberg, Germany; (K.H.); (A.R.); (C.V.)
| | - Carla Vogt
- Institute of Analytical Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, 09599 Freiberg, Germany; (K.H.); (A.R.); (C.V.)
| | - Parvaneh Rahimi
- Institute of Electronics and Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner-Str. 3, 09599 Freiberg, Germany; (A.V.); (P.R.); (S.F.); (Y.J.)
| | - Sedigheh Falahi
- Institute of Electronics and Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner-Str. 3, 09599 Freiberg, Germany; (A.V.); (P.R.); (S.F.); (Y.J.)
| | - Roberta Galli
- Department of Medical Physics and Biomedical Engineering, Faculty of Medicine Carl Gustav Carus, TU Dresden, Fetscherstr. 74, 01307 Dresden, Germany;
| | - Enrico Langer
- Institute of Semiconductors and Microsystems, TU Dresden, Nöthnitzer Str. 64, 01187 Dresden, Germany
| | - Maik Förste
- Institute for Nonferrous Metallurgy and Purest Materials (INEMET), TU Bergakademie Freiberg, Leipziger Str. 34, 09599 Freiberg, Germany; (M.F.); (A.C.)
| | - Alexandros Charitos
- Institute for Nonferrous Metallurgy and Purest Materials (INEMET), TU Bergakademie Freiberg, Leipziger Str. 34, 09599 Freiberg, Germany; (M.F.); (A.C.)
| | - Yvonne Joseph
- Institute of Electronics and Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner-Str. 3, 09599 Freiberg, Germany; (A.V.); (P.R.); (S.F.); (Y.J.)
| | - Hermann Ehrlich
- Center of Advanced Technology, Adam Mickiewicz University, Uniwersytetu Poznanskiego 10, 61-614 Poznan, Poland; (M.P.-S.); (H.E.)
- Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Poznan University of Technology, Berdychowo 4, 60-965 Poznan, Poland
| | - Teofil Jesionowski
- Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Poznan University of Technology, Berdychowo 4, 60-965 Poznan, Poland
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Kubiak A, Pajewska-Szmyt M, Kotula M, Leśniewski B, Voronkina A, Rahimi P, Falahi S, Heimler K, Rogoll A, Vogt C, Ereskovsky A, Simon P, Langer E, Springer A, Förste M, Charitos A, Joseph Y, Jesionowski T, Ehrlich H. Spongin as a Unique 3D Template for the Development of Functional Iron-Based Composites Using Biomimetic Approach In Vitro. Mar Drugs 2023; 21:460. [PMID: 37755073 PMCID: PMC10532518 DOI: 10.3390/md21090460] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 08/20/2023] [Accepted: 08/21/2023] [Indexed: 09/28/2023] Open
Abstract
Marine sponges of the subclass Keratosa originated on our planet about 900 million years ago and represent evolutionarily ancient and hierarchically structured biological materials. One of them, proteinaceous spongin, is responsible for the formation of 3D structured fibrous skeletons and remains enigmatic with complex chemistry. The objective of this study was to investigate the interaction of spongin with iron ions in a marine environment due to biocorrosion, leading to the occurrence of lepidocrocite. For this purpose, a biomimetic approach for the development of a new lepidocrocite-containing 3D spongin scaffold under laboratory conditions at 24 °C using artificial seawater and iron is described for the first time. This method helps to obtain a new composite as "Iron-Spongin", which was characterized by infrared spectroscopy and thermogravimetry. Furthermore, sophisticated techniques such as X-ray fluorescence, microscope technique, and X-Ray diffraction were used to determine the structure. This research proposed a corresponding mechanism of lepidocrocite formation, which may be connected with the spongin amino acids functional groups. Moreover, the potential application of the biocomposite as an electrochemical dopamine sensor is proposed. The conducted research not only shows the mechanism or sensor properties of "Iron-spongin" but also opens the door to other applications of these multifunctional materials.
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Affiliation(s)
- Anita Kubiak
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznan, Poland; (M.K.); (B.L.)
- Center of Advanced Technology, Adam Mickiewicz University, Uniwersytetu Poznańskiego 10, 61-614 Poznan, Poland;
| | - Martyna Pajewska-Szmyt
- Center of Advanced Technology, Adam Mickiewicz University, Uniwersytetu Poznańskiego 10, 61-614 Poznan, Poland;
| | - Martyna Kotula
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznan, Poland; (M.K.); (B.L.)
- Center of Advanced Technology, Adam Mickiewicz University, Uniwersytetu Poznańskiego 10, 61-614 Poznan, Poland;
| | - Bartosz Leśniewski
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznan, Poland; (M.K.); (B.L.)
- Center of Advanced Technology, Adam Mickiewicz University, Uniwersytetu Poznańskiego 10, 61-614 Poznan, Poland;
| | - Alona Voronkina
- Institute of Electronic and Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner-Str. 3, 09599 Freiberg, Germany; (A.V.); (P.R.); (S.F.); (Y.J.)
- Department of Pharmacy, National Pirogov Memorial Medical University, Vinnytsya, Pyrogov Street. 56, 21018 Vinnytsia, Ukraine
| | - Parvaneh Rahimi
- Institute of Electronic and Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner-Str. 3, 09599 Freiberg, Germany; (A.V.); (P.R.); (S.F.); (Y.J.)
| | - Sedigheh Falahi
- Institute of Electronic and Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner-Str. 3, 09599 Freiberg, Germany; (A.V.); (P.R.); (S.F.); (Y.J.)
| | - Korbinian Heimler
- Institute of Analytical Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, 09599 Freiberg, Germany; (K.H.); (A.R.); (C.V.)
| | - Anika Rogoll
- Institute of Analytical Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, 09599 Freiberg, Germany; (K.H.); (A.R.); (C.V.)
| | - Carla Vogt
- Institute of Analytical Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, 09599 Freiberg, Germany; (K.H.); (A.R.); (C.V.)
| | - Alexander Ereskovsky
- IMBE, CNRS, IRD, Aix Marseille University, Station Marine d’Endoume, Rue de la Batterie des Lions, 13007 Marseille, France;
| | - Paul Simon
- Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Str. 40, 01187 Dresden, Germany;
| | - Enrico Langer
- Institute of Semiconductors and Microsystems, TU Dresden, Nöthnitzer Str. 64, 01187 Dresden, Germany;
| | - Armin Springer
- Department Life, Light & Matter, University of Rostock, Albert-Einstein-Str. 25, 18059 Rostock, Germany;
- Medical Biology and Electron Microscopy Centre, Rostock University Medical Center, Strempelstr. 14, 18057 Rostock, Germany
| | - Maik Förste
- Institute for Nonferrous Metallurgy and Purest Materials (INEMET), TU Bergakademie Freiberg, Leipziger Str. 34, D-09599 Freiberg, Germany; (M.F.); (A.C.)
| | - Alexandros Charitos
- Institute for Nonferrous Metallurgy and Purest Materials (INEMET), TU Bergakademie Freiberg, Leipziger Str. 34, D-09599 Freiberg, Germany; (M.F.); (A.C.)
| | - Yvonne Joseph
- Institute of Electronic and Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner-Str. 3, 09599 Freiberg, Germany; (A.V.); (P.R.); (S.F.); (Y.J.)
| | - Teofil Jesionowski
- Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Poznan University of Technology, Berdychowo 4, 60-965 Poznan, Poland;
| | - Hermann Ehrlich
- Center of Advanced Technology, Adam Mickiewicz University, Uniwersytetu Poznańskiego 10, 61-614 Poznan, Poland;
- Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Poznan University of Technology, Berdychowo 4, 60-965 Poznan, Poland;
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Olou B, Langer E, Ryvarden L, Krah FS, Hounwanou G, Piepenbring M, Yorou N. New records and barcode sequence data of wood-inhabiting polypores in Benin with notes on their phylogenetic placements and distribution. Fungal Syst Evol 2023; 11:11-42. [PMID: 37469936 PMCID: PMC10353294 DOI: 10.3114/fuse.2023.11.02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 01/13/2023] [Indexed: 07/21/2023] Open
Abstract
Wood-inhabiting fungi (WIF), such as polypores, are extremely species-rich and play vital roles in the functioning of forest ecosystems as decomposers. Despite the importance of polypores, our knowledge of the diversity and distribution of these fungi is still poor in general and especially for West Africa. To advance our knowledge we here summarise results from field collections between 2017 and 2021 and present (i) a taxonomic overview, (ii) phylogenetic placements and (iii) an illustrated catalogue of wood-inhabiting polypore fungi with colour pictures. During the field sampling campaigns, we collected 647 specimens. Based on morphological characteristics and molecular barcode data, 76 polypore species belonging to six orders, 15 families and 39 genera were identified. Of the 76 species, 30 are new to the West Africa, 69 new to Benin, and two new combinations Fuscoporia beninensis and Megasporia minuta are proposed. With this summary, we provide new data for further research. Citation: Olou BA, Langer E, Ryvarden L, Krah F-S, Hounwanou GB, Piepenbring M, Yorou NS (2023). New records and barcode sequence data of wood-inhabiting polypores in Benin with notes on their phylogenetic placements and distribution. Fungal Systematics and Evolution 11: 11-42. doi: 10.3114/fuse.2023.11.02.
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Affiliation(s)
- B.A. Olou
- Research Unit Tropical Mycology and Plants-Soil Fungi Interactions (MyTIPS), Faculty of Agronomy, University of Parakou, BP 123 Parakou, Benin
| | - E. Langer
- Department of Ecology, University of Kassel, Heinrich-Plett-Str. 40, Kassel, Germany
| | - L. Ryvarden
- Institute of Biology, University of Oslo, P.O. Box 1066, Blindern, N-0316 Oslo, Norway
| | - F.-S. Krah
- Faculty of Biological Sciences, Institute for Ecology, Evolution and Diversity, Conservation Biology, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - G.B. Hounwanou
- Research Unit Tropical Mycology and Plants-Soil Fungi Interactions (MyTIPS), Faculty of Agronomy, University of Parakou, BP 123 Parakou, Benin
| | - M. Piepenbring
- Department of Mycology, Goethe University Frankfurt am Main, Biologicum, Max-von-Laue-Str. 13, 60438, Frankfurt am Main, Germany
| | - N.S. Yorou
- Research Unit Tropical Mycology and Plants-Soil Fungi Interactions (MyTIPS), Faculty of Agronomy, University of Parakou, BP 123 Parakou, Benin
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Tsurkan D, Simon P, Schimpf C, Motylenko M, Rafaja D, Roth F, Inosov DS, Makarova AA, Stepniak I, Petrenko I, Springer A, Langer E, Kulbakov AA, Avdeev M, Stefankiewicz AR, Heimler K, Kononchuk O, Hippmann S, Kaiser D, Viehweger C, Rogoll A, Voronkina A, Kovalchuk V, Bazhenov VV, Galli R, Rahimi-Nasrabadi M, Molodtsov SL, Rahimi P, Falahi S, Joseph Y, Vogt C, Vyalikh DV, Bertau M, Ehrlich H. Extreme Biomimetics: Designing of the First Nanostructured 3D Spongin-Atacamite Composite and its Application. Adv Mater 2021; 33:e2101682. [PMID: 34085323 DOI: 10.1002/adma.202101682] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 04/27/2021] [Indexed: 06/12/2023]
Abstract
The design of new composite materials using extreme biomimetics is of crucial importance for bioinspired materials science. Further progress in research and application of these new materials is impossible without understanding the mechanisms of formation, as well as structural features at the molecular and nano-level. It presents a challenge to obtain a holistic understanding of the mechanisms underlying the interaction of organic and inorganic phases under conditions of harsh chemical reactions for biopolymers. Yet, an understanding of these mechanisms can lead to the development of unusual-but functional-hybrid materials. In this work, a key way of designing centimeter-scale macroporous 3D composites, using renewable marine biopolymer spongin and a model industrial solution that simulates the highly toxic copper-containing waste generated in the production of printed circuit boards worldwide, is proposed. A new spongin-atacamite composite material is developed and its structure is confirmed using neutron diffraction, X-ray diffraction, high-resolution transmission electron microscopy/selected-area electron diffraction, X-ray photoelectron spectroscopy, near-edge X-ray absorption fine structure spectroscopy, and electron paramagnetic resonance spectroscopy. The formation mechanism for this material is also proposed. This study provides experimental evidence suggesting multifunctional applicability of the designed composite in the development of 3D constructed sensors, catalysts, and antibacterial filter systems.
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Affiliation(s)
- Dmitry Tsurkan
- Institut of Electronic- und Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner-Str. 3, 09599, Freiberg, Germany
| | - Paul Simon
- Max-Planck Institute for Chemical Physics of Solids, Nöthnitzer Str. 40, 01187, Dresden, Germany
| | - Christian Schimpf
- Institute of Materials Science, TU Bergakademie Freiberg, 09599, Freiberg, Germany
| | - Mykhaylo Motylenko
- Institute of Materials Science, TU Bergakademie Freiberg, 09599, Freiberg, Germany
| | - David Rafaja
- Institute of Materials Science, TU Bergakademie Freiberg, 09599, Freiberg, Germany
| | - Friedrich Roth
- Institute of Experimental Physics, TU Bergakademie Freiberg, 09599, Freiberg, Germany
| | - Dmytro S Inosov
- Institute of Solid State and Materials Physics, TU Dresden, D-01069, Dresden, Germany
- Dresden-Würzburg Cluster of Excellence on Complexity and Topology in Quantum Matter (ct.qmat), TU Dresden, D-01062, Dresden, Germany
| | - Anna A Makarova
- Institute of Chemistry and Biochemistry, Free University of Berlin, D-14195, Berlin, Germany
| | - Izabela Stepniak
- Institute of Chemistry and Technical Electrochemistry, Poznan University of Technology, ul. Berdychowo 4, Poznan, 60-965, Poland
| | - Iaroslav Petrenko
- Institut of Electronic- und Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner-Str. 3, 09599, Freiberg, Germany
| | - Armin Springer
- Medizinische Biologie und Elektronenmikroskopisches Zentrum (EMZ), Strempelstraße 14, 18057, Rostock, Germany
- Universitätsmedizin Rostock, Strempelstraße 14, 18057, Rostock, Germany
| | - Enrico Langer
- Institute of Semiconductors and Microsystems, TU Dresden, 01062, Dresden, Germany
| | - Anton A Kulbakov
- Institute of Solid State and Materials Physics, TU Dresden, D-01069, Dresden, Germany
- Dresden-Würzburg Cluster of Excellence on Complexity and Topology in Quantum Matter (ct.qmat), TU Dresden, D-01062, Dresden, Germany
| | - Maxim Avdeev
- Australian Nuclear Science and Technology Organisation, New Illawarra Road, Lucas Heights, NSW, 2234, Australia
| | - Artur R Stefankiewicz
- Center for Advanced Technologies, Adam Mickiewicz University, Poznań, Poland
- Faculty of Chemistry, Adam Mickiewicz University, Poznań, Poland
| | - Korbinian Heimler
- Institute of Analytical Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, 09599, Freiberg, Germany
| | - Olga Kononchuk
- Institute of Chemical Technology, TU Bergakademie Freiberg, Leipziger Straße 29, 09599, Freiberg, Germany
| | - Sebastian Hippmann
- Institute of Chemical Technology, TU Bergakademie Freiberg, Leipziger Straße 29, 09599, Freiberg, Germany
| | - Doreen Kaiser
- Institute of Chemical Technology, TU Bergakademie Freiberg, Leipziger Straße 29, 09599, Freiberg, Germany
| | - Christine Viehweger
- Institute of Analytical Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, 09599, Freiberg, Germany
| | - Anika Rogoll
- Institute of Analytical Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, 09599, Freiberg, Germany
| | - Alona Voronkina
- Department of Pharmacy, National Pirogov Memorial Medical University, Vinnytsia, 21018, Ukraine
| | - Valentine Kovalchuk
- Department of Pharmacy, National Pirogov Memorial Medical University, Vinnytsia, 21018, Ukraine
- Department of Microbiology, National Pirogov Memorial Medical University, Vinnytsia, 21018, Ukraine
| | | | - Roberta Galli
- Department of Medical Physics and Biomedical Engineering, Clinical Sensoring and Monitoring - Anesthesiology and Intensive Care Medicine, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, 01307, Dresden, Germany
| | - Mehdi Rahimi-Nasrabadi
- Chemical Injuries Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, 1951683759, Iran
- Faculty of Pharmacy, Baqiyatallah University of Medical Sciences, Tehran, 1951683759, Iran
- Saint-Petersburg National Research University of Information Technologies, Mechanics and Optics, ITMO University, St. Petersburg, 197101, Russia
| | - Serguei L Molodtsov
- Institute of Experimental Physics, TU Bergakademie Freiberg, 09599, Freiberg, Germany
- European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany
| | - Parvaneh Rahimi
- Institut of Electronic- und Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner-Str. 3, 09599, Freiberg, Germany
| | - Sedigheh Falahi
- Institut of Electronic- und Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner-Str. 3, 09599, Freiberg, Germany
| | - Yvonne Joseph
- Institut of Electronic- und Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner-Str. 3, 09599, Freiberg, Germany
| | - Carla Vogt
- Institute of Analytical Chemistry, TU Bergakademie Freiberg, Leipziger Str. 29, 09599, Freiberg, Germany
| | - Denis V Vyalikh
- Donostia International Physics Center (DIPC), Donostia-San Sebastián, 20018, Spain
- IKERBASQUE, Basque Foundation for Science, Bilbao, 48011, Spain
| | - Martin Bertau
- Institute of Chemical Technology, TU Bergakademie Freiberg, Leipziger Straße 29, 09599, Freiberg, Germany
| | - Hermann Ehrlich
- Institut of Electronic- und Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner-Str. 3, 09599, Freiberg, Germany
- Center for Advanced Technologies, Adam Mickiewicz University, Poznań, Poland
- Centre for Climate Change Research, Toronto, ON, M4P 1J4, Canada
- A.R. Environmental Solutions, ICUBE-University of Toronto Mississauga, Mississauga, ON, L5L 1C6, Canada
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Franke M, Slowik I, Langer E, Leo K, Richter A. Surface and mechanical analysis of metallized poly(dimethylsiloxane) gel for varifocal micromirrors. SURF INTERFACE ANAL 2020. [DOI: 10.1002/sia.6791] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Markus Franke
- Institute of Semiconductors and Microsystems (IHM) Technische Universität Dresden Dresden Germany
| | - Irma Slowik
- Dresden Integrated Center for Applied Physics and Photonic Materials (IAPP), Institute for Applied Physics Technische Universität Dresden Dresden Germany
| | - Enrico Langer
- Institute of Semiconductors and Microsystems (IHM) Technische Universität Dresden Dresden Germany
| | - Karl Leo
- Dresden Integrated Center for Applied Physics and Photonic Materials (IAPP), Institute for Applied Physics Technische Universität Dresden Dresden Germany
| | - Andreas Richter
- Institute of Semiconductors and Microsystems (IHM) Technische Universität Dresden Dresden Germany
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Tauscher A, Langer E, Dornhöfer N, Stepan H. Hyperreactio lutealis und deren Ursachen – ein Fallbericht. Geburtshilfe Frauenheilkd 2020. [DOI: 10.1055/s-0040-1718323] [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: 10/23/2022] Open
Affiliation(s)
- A Tauscher
- Abteilung für Geburtsmedizin Universitätsklinikum Leipzig
| | - E Langer
- Abteilung für Geburtsmedizin Universitätsklinikum Leipzig
| | - N Dornhöfer
- Klinik und Poliklinik für Frauenheilkunde Universitätsklinikum Leipzig
| | - H Stepan
- Abteilung für Geburtsmedizin Universitätsklinikum Leipzig
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Langer E, Kühnert I, Hagendorff A, Eifert S, Stepan H. Management der akuten peripartalen kardialen Dekompensation (PPCM) bei kardial vorerkrankten Schwangeren. Geburtshilfe Frauenheilkd 2020. [DOI: 10.1055/s-0040-1718341] [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: 10/23/2022] Open
Affiliation(s)
- E Langer
- Universitätsklinikum Leipzig, Abteilung für Geburtsmedizin
| | - I Kühnert
- Universitätsklinikum Leipzig, Klinik für Anästhesiologie und Intensivmedizin
| | - A Hagendorff
- Universiätsklinikum Leipzig, Klinik für Kardiologie
| | - S Eifert
- Herzzentrum Leipzig, Herzchirurgie
| | - H Stepan
- Universitätsklinikum Leipzig, Abteilung für Geburtsmedizin
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Nowacki K, Stępniak I, Langer E, Tsurkan M, Wysokowski M, Petrenko I, Khrunyk Y, Fursov A, Bo M, Bavestrello G, Joseph Y, Ehrlich H. Electrochemical Approach for Isolation of Chitin from the Skeleton of the Black Coral Cirrhipathes sp. (Antipatharia). Mar Drugs 2020; 18:md18060297. [PMID: 32498448 PMCID: PMC7344944 DOI: 10.3390/md18060297] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 05/28/2020] [Accepted: 05/29/2020] [Indexed: 12/29/2022] Open
Abstract
The development of novel and effective methods for the isolation of chitin, which remains one of the fundamental aminopolysaccharides within skeletal structures of diverse marine invertebrates, is still relevant. In contrast to numerous studies on chitin extraction from crustaceans, mollusks and sponges, there are only a few reports concerning its isolation from corals, and especially black corals (Antipatharia). In this work, we report the stepwise isolation and identification of chitin from Cirrhipathes sp. (Antipatharia, Antipathidae) for the first time. The proposed method, aiming at the extraction of the chitinous scaffold from the skeleton of black coral species, combined a well-known chemical treatment with in situ electrolysis, using a concentrated Na2SO4 aqueous solution as the electrolyte. This novel method allows the isolation of α-chitin in the form of a microporous membrane-like material. Moreover, the extracted chitinous scaffold, with a well-preserved, unique pore distribution, has been extracted in an astoundingly short time (12 h) compared to the earlier reported attempts at chitin isolation from Antipatharia corals.
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Affiliation(s)
- Krzysztof Nowacki
- Faculty of Chemical Technology, Institute of Chemistry and Technical Electrochemistry, Poznan University of Technology, ul. Berdychowo 4, 60965 Poznan, Poland
- Correspondence: (K.N.); (I.S.); ; (H.E.)
| | - Izabela Stępniak
- Faculty of Chemical Technology, Institute of Chemistry and Technical Electrochemistry, Poznan University of Technology, ul. Berdychowo 4, 60965 Poznan, Poland
- Correspondence: (K.N.); (I.S.); ; (H.E.)
| | - Enrico Langer
- Institute of Semiconductors and Microsystems, TU Dresden, 01062 Dresden, Germany;
| | - Mikhail Tsurkan
- Leibniz Institute of Polymer Research Dresden, 01069 Dresden, Germany;
| | - Marcin Wysokowski
- Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Poznan University of Technology, Berdychowo 4, 60965 Poznan, Poland;
- Institute of Electronics and Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner str. 3, 09599 Freiberg, Germany; (I.P.); (A.F.); (Y.J.)
| | - Iaroslav Petrenko
- Institute of Electronics and Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner str. 3, 09599 Freiberg, Germany; (I.P.); (A.F.); (Y.J.)
| | - Yuliya Khrunyk
- Department of Heat Treatment and Physics of Metal, Ural Federal University, Mira Str. 19, Ekaterinburg 620002, Russia;
- The Institute of High Temperature Electrochemistry of the Ural Branch of the Russian Academy of Sciences, Akademicheskaya Str. 20, Ekaterinburg 620990, Russia
| | - Andriy Fursov
- Institute of Electronics and Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner str. 3, 09599 Freiberg, Germany; (I.P.); (A.F.); (Y.J.)
| | - Marzia Bo
- Dipartimento di Scienze della Terra, dell’Ambiente e della Vita, Università degli Studi di Genova, Corso Europa 26, 16132 Genova, Italy; (M.B.); (G.B.)
| | - Giorgio Bavestrello
- Dipartimento di Scienze della Terra, dell’Ambiente e della Vita, Università degli Studi di Genova, Corso Europa 26, 16132 Genova, Italy; (M.B.); (G.B.)
| | - Yvonne Joseph
- Institute of Electronics and Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner str. 3, 09599 Freiberg, Germany; (I.P.); (A.F.); (Y.J.)
| | - Hermann Ehrlich
- Institute of Electronics and Sensor Materials, TU Bergakademie Freiberg, Gustav-Zeuner str. 3, 09599 Freiberg, Germany; (I.P.); (A.F.); (Y.J.)
- Center for Advanced Technology, Adam Mickiewicz University, 61614 Poznan, Poland
- Correspondence: (K.N.); (I.S.); ; (H.E.)
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Langer E, Langer G. Galzinia oberwinkleri sp. nov.: one of the three known very rare Galzinia species with bifurcate basidiospores. Mycol Prog 2019. [DOI: 10.1007/s11557-019-01475-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Abstract
SummaryIn respect to the actual discussion of new anticoagulants in secondary haemostasis, we will give a short review on established oral anti -coagulation with vitamin K antagonists and parenteral anticoagulation by use of heparin. The different cumarin derivatives phenprocoumon, warfarin, and acenocoumarol are compared concerning to the management and influence of pharmacogenetic and pharmacokinetic factors. Studies to improve the safety of oral anticoagulation by vitamin K supplementation will be briefly discussed. The therapy with heparins include until now some problems of dose-response control. It is necessary to pay attention to contra-indications even for well known anticoagulants. Examples for that will be given.
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Douanla-Meli C, Unger JG, Langer E. Multi-approach analysis of the diversity in Colletotrichum cliviae sensu lato. Antonie Van Leeuwenhoek 2017; 111:423-435. [PMID: 29094246 DOI: 10.1007/s10482-017-0965-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Accepted: 10/19/2017] [Indexed: 01/20/2023]
Abstract
Colletotrichum cliviae is a fungal species reported both as pathogen and endophyte with broad geographical distribution. Some purported isolates of this species have been assigned to different taxa, including Colletotrichum aracearum, Colletotrichum orchidearum and Colletotrichum. sichuanensis, for which a preliminary analysis of extensive multilocus (ACT, GAPDH, ITS, TUB2) data in this study revealed high sequence similarity with C. cliviae. We further reassessed the species delineation by using the coalescent method of the generalized mixed Yule-coalescent (GMYC) and Poisson Tree Processes (PTP). Single and multilocus gene trees strongly supported a C. cliviae s. lat. clade including the four species. This clade unfolded eight subclades grouped into three distinct lineages, but no monophyly of any of the four species. GMYC and PTP analyses confidently supported the evolutionary independence of these lineages. C. sichuanensis and C. cliviae, except one isolate, formed the largest lineage. The second lineage was made up of isolates named C. aracearum and some of C. orchidearum sharing the haplotype and the third lineage accommodated two isolates named C. cliviae and C. orchidearum. This finding suggests the synonymization of C. sichuanensis with C. cliviae whereas the taxonomic status of C. aracearum and C. orchidearum still needs clarification. This study lays great stress upon the use of comprehensive data for sequence-based characterisation of species in the C. cliviae s. lat. It also presents the first report of C. cliviae in tropical Africa and on citrus host.
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Affiliation(s)
- C Douanla-Meli
- Julius Kühn-Institut, Federal Research Centre for Cultivated Plants, Institute for National and International Plant Health, Messeweg 11-12, 38104, Brunswick, Germany.
| | - J-G Unger
- Julius Kühn-Institut, Federal Research Centre for Cultivated Plants, Institute for National and International Plant Health, Messeweg 11-12, 38104, Brunswick, Germany
| | - E Langer
- Universität Kassel, Fachgebiet Ökologie, Heinrich-Plett-Str. 40, 34132, Kassel, Germany
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Haefner S, Frank P, Langer E, Gruner D, Schmidt U, Elstner M, Gerlach G, Richter A. Chemically controlled micro-pores and nano-filters for separation tasks in 2D and 3D microfluidic systems. RSC Adv 2017. [DOI: 10.1039/c7ra07016k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Chemically adapted size exclusion functionalities of PNIPAAm-based nano-filters or micro-pores for separation tasks in microfluidics is presented.
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Affiliation(s)
- Sebastian Haefner
- Institute for Semiconductors and Microsystems
- Department of Electrical and Computer Engineering
- Technische Universität Dresden
- 01062 Dresden
- Germany
| | - Philipp Frank
- Institute for Semiconductors and Microsystems
- Department of Electrical and Computer Engineering
- Technische Universität Dresden
- 01062 Dresden
- Germany
| | - Enrico Langer
- Institute for Semiconductors and Microsystems
- Department of Electrical and Computer Engineering
- Technische Universität Dresden
- 01062 Dresden
- Germany
| | - Denise Gruner
- Institute for Semiconductors and Microsystems
- Department of Electrical and Computer Engineering
- Technische Universität Dresden
- 01062 Dresden
- Germany
| | - Ulrike Schmidt
- Institute of Solid State Electronics
- Department of Electrical and Computer Engineering
- Technische Universität Dresden
- 01062 Dresden
- Germany
| | - Martin Elstner
- Institute for Semiconductors and Microsystems
- Department of Electrical and Computer Engineering
- Technische Universität Dresden
- 01062 Dresden
- Germany
| | - Gerald Gerlach
- Institute of Solid State Electronics
- Department of Electrical and Computer Engineering
- Technische Universität Dresden
- 01062 Dresden
- Germany
| | - Andreas Richter
- Institute for Semiconductors and Microsystems
- Department of Electrical and Computer Engineering
- Technische Universität Dresden
- 01062 Dresden
- Germany
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Langer E, Kühnert I, Hagendorff A, Stepan H. Management einer akuten peripartalen kardialen Dekompensation in Koinzidenz mit einem SD Karzinom sowie Autoimmunthyreoiditis bei einer jungen Schwangeren. Geburtshilfe Frauenheilkd 2016. [DOI: 10.1055/s-0036-1583803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Langer E, Schrey S, Bartels M, Lordick F, Stepan H. Zufallsbefund eines großen Gastrointestinalen Stromatumor (GIST) mit Leitsymptom „akutes Abdomen“ im dritten Trimenon. Z Geburtshilfe Neonatol 2015. [DOI: 10.1055/s-0035-1566616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Langer E, Langer G, Popa F, Rexer KH, Striegel M, Ordynets A, Lysenko L, Palme S, Riebesehl J, Kost G. Naturalness of selected European beech forests reflected by fungal inventories: a first checklist of fungi of the UNESCO World Natural Heritage Kellerwald-Edersee National Park in Germany. Mycol Prog 2015. [DOI: 10.1007/s11557-015-1127-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Wysokowski M, Petrenko I, Motylenko M, Langer E, Bazhenov VV, Galli R, Stelling AL, Kljajić Z, Szatkowski T, Kutsova VZ, Stawski D, Jesionowski T. Renewable chitin from marine sponge as a thermostable biological template for hydrothermal synthesis of hematite nanospheres using principles of extreme biomimetics. ACTA ACUST UNITED AC 2015. [DOI: 10.1515/bima-2015-0001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractChitin originating from marine sponges possesses a unique nanofibrillar network structure that is the basic element of the microtubular scaffold-like skeleton of these organisms. Sponge chitin represents an intriguing example of thermostability, as it is stable up to 400 °C. It also constitutes a renewable biological source due to the high regeneration ability of Aplysina sponges under marine farming conditions. These properties can be exploited for the facile and environmentally friendly creation of novel, biocompatible organic-inorganic hybrid materials with a range of uses. Here, chitin-based scaffolds isolated from the skeleton of marine demosponge Aplysina aerophoba were used as a template for the in vitro formation of iron oxide from a saturated iron(III) chloride solution, under hydrothermal conditions (pH~1.5, 90 °C). The resultant chitin-Fe2O3 three dimensional composites, prepared for the first time via hydrothermal synthesis route, were thoroughly characterized using light, fluorescence and scanning electron microscopy; as well as with analytical methods like Raman spectroscopy, electron diffraction and HR-TEM. The results show that this versatile method allows for efficient chitin mineralization with respect to hematite. Additionally, we demonstrate that chitin nanofibers template the nucleation of uniform Fe2O3 nanocrystals.
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Schmidt K, Krüger K, Langer E, Körber M, von Heymann C, Wernecke KD. EFFICACY OF NON-SPECIFIC HEMOSTATIC AGENTS FOR REVERSAL OF PROPHYLACTIC APIXABAN LEVELS. Intensive Care Med Exp 2015. [PMCID: PMC4797007 DOI: 10.1186/2197-425x-3-s1-a910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Wysokowski M, Motylenko M, Walter J, Lota G, Wojciechowski J, Stöcker H, Galli R, Stelling AL, Himcinschi C, Niederschlag E, Langer E, Bazhenov VV, Szatkowski T, Zdarta J, Pertenko I, Kljajić Z, Leisegang T, Molodtsov SL, Meyer DC, Jesionowski T, Ehrlich H. Synthesis of nanostructured chitin–hematite composites under extreme biomimetic conditions. RSC Adv 2014. [DOI: 10.1039/c4ra10017d] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Langer E, Kühnert I, Hagendorff A, Eifert S, Stepan H. Management einer akuten peripartalen kardialen Dekompensation in Koinzidenz mit einem Schilddrüsenkarzinom sowie Autoimmunthyreoiditis bei einer jungen Schwangeren. Geburtshilfe Frauenheilkd 2014. [DOI: 10.1055/s-0034-1388143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Langer E, Fiedler A, Schlembach D, Schleußner E. Plazentavolumina von Schwangeren mit habitueller Abortneigung unter Heparintherapie. Z Geburtshilfe Neonatol 2013. [DOI: 10.1055/s-0033-1361211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Langer E, Kühnert I, Hagendorff A, Stepan H. Management einer akuten peripartalen kardialen Dekompensation in Koinzidenz mit einem Schilddrüsenkarzinom sowie Autoimmunthyreoiditis bei einer jungen Schwangeren. Z Geburtshilfe Neonatol 2013. [DOI: 10.1055/s-0033-1361266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Douanla-Meli C, Langer E, Talontsi Mouafo F. Fungal endophyte diversity and community patterns in healthy and yellowing leaves of Citrus limon. FUNGAL ECOL 2013. [DOI: 10.1016/j.funeco.2013.01.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Langer E, Kühnert I, Hagendorff A, Stepan H. Management einer akuten peripartalen kardialen Dekompensation in Koinzidenz mit einem SD Karzinom sowie Autoimmunthyreoiditis bei einer jungen Schwangeren. Geburtshilfe Frauenheilkd 2013. [DOI: 10.1055/s-0033-1343567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Wysokowski M, Motylenko M, Stöcker H, Bazhenov VV, Langer E, Dobrowolska A, Czaczyk K, Galli R, Stelling AL, Behm T, Klapiszewski Ł, Ambrożewicz D, Nowacka M, Molodtsov SL, Abendroth B, Meyer DC, Kurzydłowski KJ, Jesionowski T, Ehrlich H. An extreme biomimetic approach: hydrothermal synthesis of β-chitin/ZnO nanostructured composites. J Mater Chem B 2013; 1:6469-6476. [DOI: 10.1039/c3tb21186j] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Abstract
The first of two articles on chemical and biological warfare (Chemical and Biological Warfare (I): The Research Program, Science, 13 January 1967) incorrectly stated that the Illinois Insti tute of Technology is among institu tions conducting research on CBW. IIT is conducting no work on CBW and does not engage in classified research. The work in question is being per formed at the Illinois Institute of Tech nology Research Institute, a separate organization affiliated administratively with IIT.
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Ptatschek V, Schmidt T, Lerch M, Müller G, Spanhel L, Emmerling A, Fricke J, Foitzik AH, Langer E. Quantized aggregation phenomena in II-VI-semiconductor colloids. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19981020111] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Langer E, Ziemer S. [Established anticoagulants in secondary haemostasis--Vitamin K antagonists, heparins]. Hamostaseologie 2009; 29:241-246. [PMID: 19644603] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023] Open
Abstract
In respect to the actual discussion of new anticoagulants in secondary haemostasis, we will give a short review on established oral anticoagulation with vitamin K antagonists and parenteral anticoagulation by use of heparin. The different coumarin derivatives phenprocoumon, warfarin, and acenocoumarol are compared concerning to the management and influence of pharmacogenetic and pharmacokinetic factors. Studies to improve the safety of oral anticoagulation by vitamin K supplementation will be briefly discussed. The therapy with heparins include until now some problems of dose-response control. It is necessary to pay attention to contra-indications even for well known anticoagulants. Examples for that will be given.
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Affiliation(s)
- E Langer
- Charité-Universitätsmedizin Berlin, Campus Charité Mitte, Institut für Laboratoriumsmedizin und Pathobiochemie, Charitéplatz 1, 10117 Berlin.
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Hofmann U, Hertlein F, Knopp U, Langer E. ON THE DESIGN OF INTRACRANIAL MULTI-SITE MICROELECTRODES FOR ELECTRO IMPEDANCE TOMOGRAPHY. BIOMED ENG-BIOMED TE 2009. [DOI: 10.1515/bmte.2000.45.s1.167] [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: 11/15/2022]
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Kulagin NA, Levin AA, Langer E, Meyer DC, Doicinovic I, Puric J. Formation of quasi-ordered structures on the surface of strontium titanate in a plasma field. CRYSTALLOGR REP+ 2008. [DOI: 10.1134/s1063774508060230] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Kleinhans G, Langer E, Hemmer J, Holzknecht A. Zur Bedeutung der Aneuploidie beim Nierenzellkarzinom. Aktuelle Urol 2008. [DOI: 10.1055/s-2008-1061436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Nestle-Krämling C, Langer E, Hautzel H, Bender HG, Müller-Mattheis V. 18F‐FDG‐PET (Positronenemissionstomografie) zur Differenzialdiagnostik bei simultaner Retroperitonealfibrose und Lymphknotenmetastasierung nach Ovarialkarzinom. Geburtshilfe Frauenheilkd 2007. [DOI: 10.1055/s-2007-965050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Abstract
BACKGROUND This study was designed to evaluate prognostic parameters for respiratory failure after major oropharyngeal resections in head and neck cancer surgery, focusing on a score system to identify patients requiring an elective tracheotomy and to avoid tracheotomy under emergency conditions. METHODS One hundred and fifty-two out of 928 patients with oropharyngeal cancers, treated between January 1993 and June 2000 at our hospital, fulfilled the inclusion criteria for a retrospective analysis. This collective underwent tumour resection in different regions of the oropharynx combined with bony resection of the mandible and neck dissection without primary tracheotomy. The reconstruction was accomplished using radial forearm flaps (n1 = 59) or local flaps (n2 = 93). These two groups were subdivided into patients treated post-operatively by tracheotomy due to respiratory failure (n1 = 26; n2 = 12) and those without such treatment (n1 = 33; n2 = 81). The database comprising tumour localization and size, staging, general medical condition, smoking and alcohol consumption was evaluated by logistic regression. RESULTS We developed a score system which predicts the likelihood of post-operative respiratory failure. For indication of tracheotomy, tumour size and localization, multimorbidity, alcohol consumption and pathologic chest X-ray findings were identified as significant parameters with different weightings. The predictive value for tracheotomy (yes/no) using the score system was 96.7% for the total collective. CONCLUSION The decision on whether or not an elective tracheotomy in major head and neck tumour surgery is necessary can be facilitated using this score system which is based on objective facts. It may reduce post-operative complications and contribute to safer treatment.
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Affiliation(s)
- B Kruse-Lösler
- Clinics for Cranio-Maxillofacial Surgery, University of Münster, Waldeyerstrasse 30, 48129 Münster, Germany.
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Steiner U, Reichelt W, Daminova S, Langer E. Darstellung von Co2-xZnxMo3O8-Einkristallen mit definierter Zusammensetzung durch Chemischen Transport. Z Anorg Allg Chem 2005. [DOI: 10.1002/zaac.200400402] [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: 11/12/2022]
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Untch M, Ditsch N, Langer E, Kurbacher C, Crohns C, Konecny G, Kahlert S, Bauerfeind I, Hepp H. Chemosensitivity testing in gynecologic oncology--dream or reality? Recent Results Cancer Res 2003; 161:146-58. [PMID: 12528806 DOI: 10.1007/978-3-642-19022-3_13] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
Abstract
Cell culture and animal models have played an essential role in the research of new principles of therapy. Many methods for the individualized testing of therapy sensitivity and resistance have been developed, for example, the clonogenic assay. Presently, the ATP-TCA is commercially available as a testing kit. This review gives an overview of the tumor samples that were tested in the oncologic laboratory in the Department of Obstetrics and Gynecology, Munich Grosshadern between 1993 and 2001. All target parameters show a clear trend in favor of sequential, dose-intensified Epirubicin/Paclitaxel therapy. If this trend remains valid for the total number of patients, a significant impact of this new principle of therapy can be expected. By individualized planning of therapy with ATP-TCA testing, therapy in the individual patient could already be performed by the examination of sensitivity in the preoperative biopsy specimen.
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Affiliation(s)
- M Untch
- Department of Obstetrics and Gynecology, University of München-Grosshadern, Marchioninistrassle 15, 81377 München, Germany.
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Konecny G, Untch M, Slamon D, Beryt M, Kahlert S, Felber M, Langer E, Lude S, Hepp H, Pegram M. Drug interactions and cytotoxic effects of paclitaxel in combination with carboplatin, epirubicin, gemcitabine or vinorelbine in breast cancer cell lines and tumor samples. Breast Cancer Res Treat 2001; 67:223-33. [PMID: 11561768 DOI: 10.1023/a:1017980411398] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The purpose of this study was to analyze the drug interactions of paclitaxel (PTX) with epirubicin (EPI), carboplatin (CBDCA), gemcitabine (GEM) and vinorelbine (VIN) in human breast cancer cells and compare the cytotoxic activity of each drug combination in primary breast cancer samples. These experiments were intended to identify the most active agents in combination with PTX, and to provide a preclinical rational for future clinical investigations in breast cancer. Multiple drug effect/combination index (CI) isobologram analysis was applied to combinations of PTX with either CBDCA, EPI, GEM or VIN in MCF-7, MDA-MB-231 and SK-BR-3 human breast cancer cell lines. Drug concentrations were limited to the ranges achievable in humans in vivo, and the drugs were applied simultaneously at fixed molar ratios for each drug combination. Interactions were assessed at multiple effect levels (IC10-IC90). Additionally, the cytotoxic activity of these combinations was assessed in tumor samples of 50 primary breast cancer patients, utilizing the ATP-tumorchemosensitivity assay (ATP-TCA). Drug interactions were shown to be strongly dose-related in the human breast cancer cell lines investigated. At clinically relevant concentrations, CBDCA/PTX demonstrated synergistic (MCF-7) or additive (MDA-MB-231, SK-BR-3) interactions, and EPI/PTX showed additive (SK-BR-3, MCF-7) and antagonistic (MDA-MB-231) interactions. GEM/PTX and VIN/PTX, however, demonstrated antagonism over multiple dose effect levels at clinically relevant drug concentrations in all three cell lines tested. At plasma peak concentrations, EPI/PTX, CBDCA/PTX, GEM/PTX and VIN/PTX achieved > or = 90% tumor growth inhibition in 93, 86, 63 and 50%, respectively, of primary breast cancer samples investigated with the ATP-TCA. Cumulative dose-response plots of primary breast cancer tumor cells responding in vitro with > or = 90% growth inhibition showed a strong dose dependence for both EPI/PTX and CBDCA/PTX. In conclusion, the current data indicate favorable drug interactions for CBDCA/PTX at clinically relevant drug concentrations in breast cancer cells, and demonstrate superior in vitro cytotoxicity of EPI/PTX and CBDCA/PTX compared to GEM/PTX and VIN/PTX in primary breast cancer cultures.
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Affiliation(s)
- G Konecny
- Department of Medicine, University of California, Los Angeles School of Medicine, 90095-1678, USA.
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Drinka PJ, Gravenstein S, Langer E, Krause P, Shult P. Mortality following isolation of various respiratory viruses in nursing home residents. Infect Control Hosp Epidemiol 1999; 20:812-5. [PMID: 10614604 DOI: 10.1086/501589] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVE To compare mortality following isolation of influenza A to mortality following isolation of other respiratory viruses in a nursing home. SETTING The Wisconsin Veterans Home, a 688-bed skilled nursing facility for veterans and their spouses. PARTICIPANTS All residents with respiratory viral isolates obtained between 1988 and 1999. DESIGN Thirty-day mortality was determined following each culture-proven illness. RESULTS Thirty-day mortality following isolation of viral respiratory pathogens was 4.7% (15/322) for influenza A; 5.4% (7/129) for influenza B; 6.1% (3/49) for parainfluenza type 1; 0% (0/26) for parainfluenza types 2, 3, and 4; 0% (0/26) for respiratory syncytial virus (RSV); and 1.6% (1/61) for rhinovirus. CONCLUSIONS Mortality following isolation of certain other respiratory viruses may be comparable to that following influenza A (although influenza A mortality might be higher without vaccination and antiviral agents). The use of uniform secretion precautions for all viral respiratory illness deserves consideration in nursing homes.
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Affiliation(s)
- P J Drinka
- Wisconsin Veterans Home, King 54946-0620, USA
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Hibbett DS, Pine EM, Langer E, Langer G, Donoghue MJ. Evolution of gilled mushrooms and puffballs inferred from ribosomal DNA sequences. Proc Natl Acad Sci U S A 1997; 94:12002-6. [PMID: 9342352 PMCID: PMC23683 DOI: 10.1073/pnas.94.22.12002] [Citation(s) in RCA: 196] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Homobasidiomycete fungi display many complex fruiting body morphologies, including mushrooms and puffballs, but their anatomical simplicity has confounded efforts to understand the evolution of these forms. We performed a comprehensive phylogenetic analysis of homobasidiomycetes, using sequences from nuclear and mitochondrial ribosomal DNA, with an emphasis on understanding evolutionary relationships of gilled mushrooms and puffballs. Parsimony-based optimization of character states on our phylogenetic trees suggested that strikingly similar gilled mushrooms evolved at least six times, from morphologically diverse precursors. Approximately 87% of gilled mushrooms are in a single lineage, which we call the "euagarics." Recently discovered 90 million-year-old fossil mushrooms are probably euagarics, suggesting that (i) the origin of this clade must have occurred no later than the mid-Cretaceous and (ii) the gilled mushroom morphology has been maintained in certain lineages for tens of millions of years. Puffballs and other forms with enclosed spore-bearing structures (Gasteromycetes) evolved at least four times. Derivation of Gasteromycetes from forms with exposed spore-bearing structures (Hymenomycetes) is correlated with repeated loss of forcible spore discharge (ballistospory). Diverse fruiting body forms and spore dispersal mechanisms have evolved among Gasteromycetes. Nevertheless, it appears that Hymenomycetes have never been secondarily derived from Gasteromycetes, which suggests that the loss of ballistospory has constrained evolution in these lineages.
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Affiliation(s)
- D S Hibbett
- Harvard University Herbaria, Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138, USA.
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Abstract
Using figure drawings, perception of body shape was evaluated by underweight, average, and overweight men and women. Body-shape dissatisfaction was greatest for 60 overweight women, and about the same in 151 average weight women as it was for 102 overweight men. Average weight men (n = 107) and underweight women (n = 31) were fairly satisfied with their current shapes. Both men and women had distorted views of the shape the opposite sex found most attractive. Women guessed that men would prefer a thinner shape than they actually did, and men guessed that women would prefer a larger shape than they actually did. The distortion was larger for men as their own size increased but not for women.
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Affiliation(s)
- J Demarest
- Department of Psychology, Monmouth University, West Long Branch, NJ 07764-1898, USA
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Abstract
This study explores whether negative stereotypes about aging contribute to memory loss in old age. The research participants consisted of old and young Chinese hearing, American Deaf, and American hearing individuals. Members of the mainland Chinese and the American Deaf cultures were recruited on the basis of the belief that they would be less likely than hearing Americans to be exposed to and accept negative stereotypes about aging. The expected results were (a) an interaction in which the 3 groups of younger Ss would perform similarly on the memory tasks, whereas the older Deaf and older Chinese participants would outperform the older American hearing group and (b) a positive correlation between view toward aging and memory performance among the old Ss. The data supported both hypotheses. The results suggest that cultural beliefs about aging play a role in determining the degree of memory loss people experience in old age.
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Affiliation(s)
- B Levy
- Department of Psychology, Harvard University, Cambridge, Massachusetts 02138
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Abstract
This study explores whether negative stereotypes about aging contribute to memory loss in old age. The research participants consisted of old and young Chinese hearing, American Deaf, and American hearing individuals. Members of the mainland Chinese and the American Deaf cultures were recruited on the basis of the belief that they would be less likely than hearing Americans to be exposed to and accept negative stereotypes about aging. The expected results were (a) an interaction in which the 3 groups of younger Ss would perform similarly on the memory tasks, whereas the older Deaf and older Chinese participants would outperform the older American hearing group and (b) a positive correlation between view toward aging and memory performance among the old Ss. The data supported both hypotheses. The results suggest that cultural beliefs about aging play a role in determining the degree of memory loss people experience in old age.
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Affiliation(s)
- B Levy
- Department of Psychology, Harvard University, Cambridge, Massachusetts 02138
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Abstract
OBJECTIVE To identify risk factors for bacteriuria in a selected group of institutionalized men. METHODS A total of 99 men, mean age seventy-one years, range forty-eight to one hundred four years, living in a nursing home were evaluated for diagnoses of benign prostatic hyperplasia (BPH) and diabetes mellitus (DM), symptoms of bladder outlet obstruction, and postvoid residual urine volume (PVR). At the time of evaluation urine cultures were performed for all subjects. Urinalyses had been performed in all men within the two years prior to initiation of the study. Residents unable to give informed consent, with a history of cancer of the prostate or bladder, previous urethral or prostate surgery, or inability to void in the standing position were excluded. RESULTS Prior to or during the study 30 residents had bacteriuria, which was not correlated with age, PVR, previous diagnoses of BPH or DM, or with obstructive or irritative urinary symptoms consistent with bladder outlet obstruction. CONCLUSIONS Competent, institutionalized residents with higher functional levels meeting the inclusion criteria were not at a high risk of bacteriuria. The concept that increased PVR per se predisposes to bacteriuria cannot be substantiated.
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Affiliation(s)
- M Riehmann
- Department of Surgery, University of Wisconsin Hospital and Clinics, Madison
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Gravenstein S, Drinka P, Duthie EH, Miller BA, Brown CS, Hensley M, Circo R, Langer E, Ershler WB. Efficacy of an influenza hemagglutinin-diphtheria toxoid conjugate vaccine in elderly nursing home subjects during an influenza outbreak. J Am Geriatr Soc 1994; 42:245-51. [PMID: 8120307 DOI: 10.1111/j.1532-5415.1994.tb01746.x] [Citation(s) in RCA: 90] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
OBJECTIVE To compare the efficacy of an influenza hemagglutinin-diphtheria toxoid conjugate vaccine with the commercially available influenza hemagglutinin-subunit vaccine in preventing influenza in older adults living in a nursing home. DESIGN A prospective, randomized, double-blind vaccine trial with 5 months of follow-up after vaccination. SETTING Fourteen Wisconsin nursing homes. PARTICIPANTS Nursing home residents at least 65 years old who were able to give informed consent and were free of malignancy and not receiving immunosuppressive therapy. INTERVENTIONS Participants received, by intramuscular injection, 0.5 mL of a trivalent influenza vaccine containing 15 micrograms each of A/Leningrad/360/86 (H3N2), A/Taiwan/1/86 (H1N1), and B/Ann Arbor/1/86 (HA) or 0.5 mL of an influenza vaccine containing the same antigens conjugated to diphtheria toxoid (HA-D). MEASUREMENTS Blood was obtained pre- and 1 month post-vaccination to assess for any vaccine-induced antibody titer change. Clinical surveillance for respiratory illness was performed twice weekly for 5 months. A record was kept of all signs and symptoms of new respiratory illness, and a viral culture and acute and convalescent sera were obtained. RESULTS 204 participants received HA and 204 received HA-D. Both groups had similar baseline antibody levels to all influenza antigens. HA-D recipients seroconverted more frequently based on serum neutralizing activity (P < 0.05), had a greater increase in geometric mean titer (GMT), and sustained the increase in antibody titer longer than HA recipients. Vaccine hemagglutinin recall was greater in a subset of HA-D recipients as measured by lymphocyte proliferative assays (P < 0.05). During an outbreak of influenza A (H3N2 A/Shanghai/11/87-like and A/Victoria/7/87-like), fewer HA-D (29/195) than HA (43/204) recipients had laboratory-confirmed infection (P = 0.053), and, of these, fewer HA-D-treated subjects had lower respiratory tract involvement (5/29 HA-D and 17/43 HA) (P = 0.022). CONCLUSIONS HA-D was more immunogenic in institutionalized elderly recipients and produced greater protection from influenza infection. Superior protection may be due to HA-D's ability to stimulate and recruit antigen-presenting cells, thus enabling the recipient to achieve and maintain functional antibody titers.
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Affiliation(s)
- S Gravenstein
- Department of Medicine, University of Wisconsin-Madison
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