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Lüddecke T, Damm M, Laxme RS, Dawson CA. Diversity, self-perception and future perspectives of early career researchers in toxinology: Lessons from the 21st world congress of the international society on toxinology. Toxicon 2023; 236:107343. [PMID: 37931758 DOI: 10.1016/j.toxicon.2023.107343] [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] [Received: 09/07/2023] [Revised: 10/18/2023] [Accepted: 11/03/2023] [Indexed: 11/08/2023]
Affiliation(s)
- Tim Lüddecke
- Department for Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Ohlebergsweg 12, 35392, Gießen, Germany; LOEWE-Centre for Translational Biodiversity Genomics, Senckenberganlage 25, 60325, Frankfurt Am Main, Germany
| | - Maik Damm
- LOEWE-Centre for Translational Biodiversity Genomics, Senckenberganlage 25, 60325, Frankfurt Am Main, Germany
| | - Rr Senji Laxme
- Evolutionary Venomics Lab, Centre for Ecological Sciences, Indian Institute of Science, Bangalore, 560012, India
| | - Charlotte A Dawson
- Centre for Snakebite Research & Interventions, Liverpool School of Tropical Medicine, Liverpool, L3 5QA, UK.
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2
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Schulte L, Damm M, Avella I, Uhrig L, Erkoc P, Schiffmann S, Fürst R, Timm T, Lochnit G, Vilcinskas A, Lüddecke T. Venomics of the milos viper ( Macrovipera schweizeri) unveils patterns of venom composition and exochemistry across blunt-nosed viper venoms. Front Mol Biosci 2023; 10:1254058. [PMID: 37719269 PMCID: PMC10500195 DOI: 10.3389/fmolb.2023.1254058] [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: 07/06/2023] [Accepted: 08/21/2023] [Indexed: 09/19/2023] Open
Abstract
Introduction: Snakebite is a neglected tropical disease and a globally important driver of death and morbidity. Vipers of the genus Macrovipera (Viperidae: Viperinae) are among the snakes of higher medical importance in the Old World. Despite the medical relevance of Macrovipera venoms, the knowledge regarding them is heterogeneously distributed with virtually all works conducted so far focusing on subspecies of Macrovipera lebetinus, while other species within the genus are largely overlooked. Here we present the first proteomic evaluation of the venom from the Greek endemic Milos viper (Macrovipera schweizeri). In line with clinical symptoms typically elicited by Macrovipera envenomations, Milos viper venom primarily comprises coagulotoxic and cytotoxic protein families, such as metalloproteinases (svMP) and serine proteases (svSP). Methods: We conducted comparative bioactivity assays on venoms from M. schweizeri and the M. lebetinus subspecies M. lebetinus cernovi, M. lebetinus obtusa, and M. lebetinus turanica, and showed that they all exhibit similarities in levels of cytotoxicity proteolytic activity, and inhibition of prokaryotic growth. Lastly, we compared Macrovipera venom profiles by 1D-SDS-PAGE and RP-HPLC, as well as our proteomic data with previously published Macrovipera venom proteomes. Results and discussion: The analyzes performed to reveal that a general venom profile seems to be conserved across blunt-nosed vipers, and that, M. schweizeri envenomations, similarly to those caused by other blunt-nosed vipers, are able to cause significant tissue damage. The present work represents an important starting point for the development of comparative studies across the full taxonomic range of the genus Macrovipera and can potentially help optimize the treatment of envenomations caused by M. schweizeri.
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Affiliation(s)
- Lennart Schulte
- Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Giessen, Germany
- Institute for Insect Biotechnology, Justus Liebig University Giessen, Giessen, Germany
- LOEWE-Centre for Translational Biodiversity Genomics, Frankfurt, Germany
| | - Maik Damm
- LOEWE-Centre for Translational Biodiversity Genomics, Frankfurt, Germany
| | - Ignazio Avella
- CIBIO, Research Centre in Biodiversity and Genetic Resources, InBIO Associated Laboratory, University Port, Porto, Portugal
- Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
- CIBIO, BIOPOLIS Program in Genomics, Biodiversity and Land Planning, Vairão, Portugal
| | - Lilien Uhrig
- Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Giessen, Germany
| | - Pelin Erkoc
- LOEWE-Centre for Translational Biodiversity Genomics, Frankfurt, Germany
- Institute of Pharmaceutical Biology, Faculty of Biochemistry, Chemistry and Pharmacy, Goethe University Frankfurt, Frankfurt, Germany
| | - Susanne Schiffmann
- LOEWE-Centre for Translational Biodiversity Genomics, Frankfurt, Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology (ITMP), Frankfurt, Germany
| | - Robert Fürst
- LOEWE-Centre for Translational Biodiversity Genomics, Frankfurt, Germany
- Institute of Pharmaceutical Biology, Faculty of Biochemistry, Chemistry and Pharmacy, Goethe University Frankfurt, Frankfurt, Germany
| | - Thomas Timm
- Institute of Biochemistry, Justus Liebig University Giessen, Giessen, Germany
| | - Günter Lochnit
- Institute of Biochemistry, Justus Liebig University Giessen, Giessen, Germany
| | - Andreas Vilcinskas
- Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Giessen, Germany
- Institute for Insect Biotechnology, Justus Liebig University Giessen, Giessen, Germany
- LOEWE-Centre for Translational Biodiversity Genomics, Frankfurt, Germany
| | - Tim Lüddecke
- Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Giessen, Germany
- LOEWE-Centre for Translational Biodiversity Genomics, Frankfurt, Germany
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3
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Avella I, Damm M, Freitas I, Wüster W, Lucchini N, Zuazo Ó, Süssmuth RD, Martínez-Freiría F. One Size Fits All-Venomics of the Iberian Adder ( Vipera seoanei, Lataste 1878) Reveals Low Levels of Venom Variation across Its Distributional Range. Toxins (Basel) 2023; 15:371. [PMID: 37368672 PMCID: PMC10301717 DOI: 10.3390/toxins15060371] [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: 04/29/2023] [Revised: 05/18/2023] [Accepted: 05/30/2023] [Indexed: 06/29/2023] Open
Abstract
European vipers (genus Vipera) are medically important snakes displaying considerable venom variation, occurring at different levels in this group. The presence of intraspecific venom variation, however, remains understudied in several Vipera species. Vipera seoanei is a venomous snake endemic to the northern Iberian Peninsula and south-western France, presenting notable phenotypic variation and inhabiting several diverse habitats across its range. We analysed the venoms of 49 adult specimens of V. seoanei from 20 localities across the species' Iberian distribution. We used a pool of all individual venoms to generate a V. seoanei venom reference proteome, produced SDS-PAGE profiles of all venom samples, and visualised patterns of variation using NMDS. By applying linear regression, we then assessed presence and nature of venom variation between localities, and investigated the effect of 14 predictors (biological, eco-geographic, genetic) on its occurrence. The venom comprised at least 12 different toxin families, of which five (i.e., PLA2, svSP, DI, snaclec, svMP) accounted for about 75% of the whole proteome. The comparative analyses of the SDS-PAGE venom profiles showed them to be remarkably similar across the sampled localities, suggesting low geographic variability. The regression analyses suggested significant effects of biological and habitat predictors on the little variation we detected across the analysed V. seoanei venoms. Other factors were also significantly associated with the presence/absence of individual bands in the SDS-PAGE profiles. The low levels of venom variability we detected within V. seoanei might be the result of a recent population expansion, or of processes other than directional positive selection.
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Affiliation(s)
- Ignazio Avella
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, Universidade do Porto, 4485-661 Vairão, Portugal; (I.F.); (N.L.)
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, 4099-002 Porto, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661 Vairão, Portugal
| | - Maik Damm
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 124, 10623 Berlin, Germany; (M.D.)
| | - Inês Freitas
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, Universidade do Porto, 4485-661 Vairão, Portugal; (I.F.); (N.L.)
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, 4099-002 Porto, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661 Vairão, Portugal
| | - Wolfgang Wüster
- Molecular Ecology and Evolution at Bangor, School of Natural Sciences, Bangor University, Bangor LL57 2UW, UK;
| | - Nahla Lucchini
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, Universidade do Porto, 4485-661 Vairão, Portugal; (I.F.); (N.L.)
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, 4099-002 Porto, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661 Vairão, Portugal
| | - Óscar Zuazo
- Calle La Puebla 1, 26250 Santo Domingo de la Calzada, Spain
| | - Roderich D. Süssmuth
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 124, 10623 Berlin, Germany; (M.D.)
| | - Fernando Martínez-Freiría
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, Universidade do Porto, 4485-661 Vairão, Portugal; (I.F.); (N.L.)
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661 Vairão, Portugal
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4
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Hoffmann S, Damm M, Roth L, Süssmuth R. Hydroxy Acid Activation in Fungal Non-Ribosomal Peptide Synthesis Assessed by Site-Directed Mutagenesis. Chembiochem 2023:e202300233. [PMID: 37252886 DOI: 10.1002/cbic.202300233] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 05/12/2023] [Accepted: 05/30/2023] [Indexed: 06/01/2023]
Abstract
The fungal cyclodepsipeptides (CDPs) enniatin, beauvericin, bassianolide and PF1022 consist of alternating N-methylated l-amino and d-hydroxy acids. They are synthesized by non-ribosomal peptide synthetases (NRPS). The amino acid and hydroxy acid substrates are activated by adenylation (A) domains. Although various A domains have been characterized thus giving insights into the mechanism of substrate conversion, little is known about the utilization of hydroxy acids in NRPSs. Therefore, we used homology modelling and molecular docking of the A1 domain of enniatin synthetase (EnSyn) to gain insights into the mechanism of hydroxy acid activation. We introduced point mutations into the active site and used a photometric assay to study the substrate activation. The results suggest that the hydroxy acid is selected by interaction with backbone carbonyls rather than by a specific side chain. These insights enhance the understanding of non-amino acid substrate activation and could contribute to the engineering of depsipeptide synthetases.
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Affiliation(s)
- Sylvester Hoffmann
- Technische Universität Berlin Fakultät II Mathematik und Naturwissenschaften: Technische Universitat Berlin Fakultat II Mathematik und Naturwissenschaften, Biologische Chemie, GERMANY
| | - Maik Damm
- Technische Universität Berlin Fakultät II Mathematik und Naturwissenschaften: Technische Universitat Berlin Fakultat II Mathematik und Naturwissenschaften, Biologische Chemie, GERMANY
| | - Leonard Roth
- Technische Universität Berlin Fakultät II Mathematik und Naturwissenschaften: Technische Universitat Berlin Fakultat II Mathematik und Naturwissenschaften, Biologische Chemie, GERMANY
| | - Roderich Süssmuth
- Technical University Berlin, Organic Chemistry, Strasse des 17. Juni 124/ TC2, TC Building, 10623, Berlin, GERMANY
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5
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Hempel BF, Damm M, Petras D, Kazandjian TD, Szentiks CA, Fritsch G, Nebrich G, Casewell NR, Klein O, Süssmuth RD. Spatial Venomics─Cobra Venom System Reveals Spatial Differentiation of Snake Toxins by Mass Spectrometry Imaging. J Proteome Res 2023; 22:26-35. [PMID: 36521429 DOI: 10.1021/acs.jproteome.2c00424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Among venomous animals, toxic secretions have evolved as biochemical weapons associated with various highly specialized delivery systems on many occasions. Despite extensive research, there is still limited knowledge of the functional biology of most animal toxins, including their venom production and storage, as well as the morphological structures within sophisticated venom producing tissues that might underpin venom modulation. Here, we report on the spatial exploration of a snake venom gland system by matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI), in combination with standard proteotranscriptomic approaches, to enable in situ toxin mapping in spatial intensity maps across a venom gland sourced from the Egyptian cobra (Naja haje). MALDI-MSI toxin visualization on the elapid venom gland reveals a high spatial heterogeneity of different toxin classes at the proteoform level, which may be the result of physiological constraints on venom production and/or storage that reflects the potential for venom modulation under diverse stimuli.
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Affiliation(s)
- Benjamin-Florian Hempel
- BIH Center for Regenerative Therapies BCRT, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany.,Institut für Chemie, Technische Universität Berlin, 10623 Berlin, Germany
| | - Maik Damm
- Institut für Chemie, Technische Universität Berlin, 10623 Berlin, Germany
| | - Daniel Petras
- CMFI Cluster of Excellence, Interfakultäres Institut für Mikrobiologie und Infektionsmedizin Tübingen, Universität Tübingen, 72076 Tübingen, Germany
| | - Taline D Kazandjian
- Centre for Snakebite Research & Interventions, Liverpool School of Tropical Medicine, Liverpool L3 5QA, U.K
| | - Claudia A Szentiks
- Department of Wildlife Diseases and Reproduction Management, Leibniz Institute for Zoo and Wildlife Research (IZW) in the Forschungsverbund Berlin e.V., 10315 Berlin, Germany
| | - Guido Fritsch
- Department of Wildlife Diseases and Reproduction Management, Leibniz Institute for Zoo and Wildlife Research (IZW) in the Forschungsverbund Berlin e.V., 10315 Berlin, Germany
| | - Grit Nebrich
- BIH Center for Regenerative Therapies BCRT, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - Nicholas R Casewell
- Centre for Snakebite Research & Interventions, Liverpool School of Tropical Medicine, Liverpool L3 5QA, U.K
| | - Oliver Klein
- BIH Center for Regenerative Therapies BCRT, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany
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6
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von Reumont BM, Anderluh G, Antunes A, Ayvazyan N, Beis D, Caliskan F, Crnković A, Damm M, Dutertre S, Ellgaard L, Gajski G, German H, Halassy B, Hempel BF, Hucho T, Igci N, Ikonomopoulou MP, Karbat I, Klapa MI, Koludarov I, Kool J, Lüddecke T, Ben Mansour R, Vittoria Modica M, Moran Y, Nalbantsoy A, Ibáñez MEP, Panagiotopoulos A, Reuveny E, Céspedes JS, Sombke A, Surm JM, Undheim EAB, Verdes A, Zancolli G. Modern venomics-Current insights, novel methods, and future perspectives in biological and applied animal venom research. Gigascience 2022; 11:6588117. [PMID: 35640874 PMCID: PMC9155608 DOI: 10.1093/gigascience/giac048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 04/10/2022] [Accepted: 04/12/2022] [Indexed: 12/11/2022] Open
Abstract
Venoms have evolved >100 times in all major animal groups, and their components, known as toxins, have been fine-tuned over millions of years into highly effective biochemical weapons. There are many outstanding questions on the evolution of toxin arsenals, such as how venom genes originate, how venom contributes to the fitness of venomous species, and which modifications at the genomic, transcriptomic, and protein level drive their evolution. These questions have received particularly little attention outside of snakes, cone snails, spiders, and scorpions. Venom compounds have further become a source of inspiration for translational research using their diverse bioactivities for various applications. We highlight here recent advances and new strategies in modern venomics and discuss how recent technological innovations and multi-omic methods dramatically improve research on venomous animals. The study of genomes and their modifications through CRISPR and knockdown technologies will increase our understanding of how toxins evolve and which functions they have in the different ontogenetic stages during the development of venomous animals. Mass spectrometry imaging combined with spatial transcriptomics, in situ hybridization techniques, and modern computer tomography gives us further insights into the spatial distribution of toxins in the venom system and the function of the venom apparatus. All these evolutionary and biological insights contribute to more efficiently identify venom compounds, which can then be synthesized or produced in adapted expression systems to test their bioactivity. Finally, we critically discuss recent agrochemical, pharmaceutical, therapeutic, and diagnostic (so-called translational) aspects of venoms from which humans benefit.
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Affiliation(s)
- Bjoern M von Reumont
- Goethe University Frankfurt, Institute for Cell Biology and Neuroscience, Department for Applied Bioinformatics, 60438 Frankfurt am Main, Germany.,LOEWE Centre for Translational Biodiversity Genomics, Senckenberg Frankfurt, Senckenberganlage 25, 60235 Frankfurt, Germany.,Justus Liebig University Giessen, Institute for Insectbiotechnology, Heinrich Buff Ring 26-32, 35396 Giessen, Germany
| | - Gregor Anderluh
- Department of Molecular Biology and Nanobiotechnology, National Institute of Chemistry, 1000 Ljubljana, Slovenia
| | - Agostinho Antunes
- CIIMAR/CIMAR, Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos, s/n, 4450-208 Porto, Portugal.,Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal
| | - Naira Ayvazyan
- Orbeli Institute of Physiology of NAS RA, Orbeli ave. 22, 0028 Yerevan, Armenia
| | - Dimitris Beis
- Developmental Biology, Centre for Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation Academy of Athens, Athens 11527, Greece
| | - Figen Caliskan
- Department of Biology, Faculty of Science and Letters, Eskisehir Osmangazi University, TR-26040 Eskisehir, Turkey
| | - Ana Crnković
- Department of Molecular Biology and Nanobiotechnology, National Institute of Chemistry, 1000 Ljubljana, Slovenia
| | - Maik Damm
- Technische Universität Berlin, Department of Chemistry, Straße des 17. Juni 135, 10623 Berlin, Germany
| | | | - Lars Ellgaard
- Department of Biology, University of Copenhagen, DK-2200 Copenhagen, Denmark
| | - Goran Gajski
- Institute for Medical Research and Occupational Health, Mutagenesis Unit, Ksaverska cesta 2, 10000 Zagreb, Croatia
| | - Hannah German
- Amsterdam Institute of Molecular and Life Sciences, Division of BioAnalytical Chemistry, Faculty of Science, Vrije Universiteit Amsterdam, De Boelelaan 1085, 1081HV Amsterdam, The Netherlands
| | - Beata Halassy
- University of Zagreb, Centre for Research and Knowledge Transfer in Biotechnology, Trg Republike Hrvatske 14, 10000 Zagreb, Croatia
| | - Benjamin-Florian Hempel
- BIH Center for Regenerative Therapies BCRT, Charité - Universitätsmedizin Berlin, Augustenburger Platz 1, 13353 Berlin, Germany
| | - Tim Hucho
- Translational Pain Research, Department of Anesthesiology and Intensive Care Medicine, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50931 Cologne, Germany
| | - Nasit Igci
- Nevsehir Haci Bektas Veli University, Faculty of Arts and Sciences, Department of Molecular Biology and Genetics, 50300 Nevsehir, Turkey
| | - Maria P Ikonomopoulou
- Madrid Institute for Advanced Studies in Food, Madrid,E28049, Spain.,The University of Queensland, St Lucia, QLD 4072, Australia
| | - Izhar Karbat
- Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Maria I Klapa
- Metabolic Engineering and Systems Biology Laboratory, Institute of Chemical Engineering Sciences, Foundation for Research & Technology Hellas (FORTH/ICE-HT), Patras GR-26504, Greece
| | - Ivan Koludarov
- Justus Liebig University Giessen, Institute for Insectbiotechnology, Heinrich Buff Ring 26-32, 35396 Giessen, Germany
| | - Jeroen Kool
- Amsterdam Institute of Molecular and Life Sciences, Division of BioAnalytical Chemistry, Faculty of Science, Vrije Universiteit Amsterdam, De Boelelaan 1085, 1081HV Amsterdam, The Netherlands
| | - Tim Lüddecke
- LOEWE Centre for Translational Biodiversity Genomics, Senckenberg Frankfurt, Senckenberganlage 25, 60235 Frankfurt, Germany.,Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, 35392 Gießen, Germany
| | - Riadh Ben Mansour
- Department of Life Sciences, Faculty of Sciences, Gafsa University, Campus Universitaire Siidi Ahmed Zarrouk, 2112 Gafsa, Tunisia
| | - Maria Vittoria Modica
- Dept. of Biology and Evolution of Marine Organisms (BEOM), Stazione Zoologica Anton Dohrn, Via Po 25c, I-00198 Roma, Italy
| | - Yehu Moran
- Department of Ecology, Evolution and Behavior, Alexander Silberman Institute of Life Sciences, Faculty of Science, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
| | - Ayse Nalbantsoy
- Department of Bioengineering, Faculty of Engineering, Ege University, 35100 Bornova, Izmir, Turkey
| | - María Eugenia Pachón Ibáñez
- Unit of Infectious Diseases, Microbiology, and Preventive Medicine, Virgen del Rocío University Hospital, Institute of Biomedicine of Seville, 41013 Sevilla, Spain.,CIBER de Enfermedades Infecciosas, Instituto de Salud Carlos III, Madrid, Spain
| | - Alexios Panagiotopoulos
- Metabolic Engineering and Systems Biology Laboratory, Institute of Chemical Engineering Sciences, Foundation for Research & Technology Hellas (FORTH/ICE-HT), Patras GR-26504, Greece.,Animal Biology Division, Department of Biology, University of Patras, Patras, GR-26500, Greece
| | - Eitan Reuveny
- Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Javier Sánchez Céspedes
- Unit of Infectious Diseases, Microbiology, and Preventive Medicine, Virgen del Rocío University Hospital, Institute of Biomedicine of Seville, 41013 Sevilla, Spain.,CIBER de Enfermedades Infecciosas, Instituto de Salud Carlos III, Madrid, Spain
| | - Andy Sombke
- Department of Evolutionary Biology, University of Vienna, Djerassiplatz 1, 1030 Vienna, Austria
| | - Joachim M Surm
- Department of Ecology, Evolution and Behavior, Alexander Silberman Institute of Life Sciences, Faculty of Science, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
| | - Eivind A B Undheim
- University of Oslo, Centre for Ecological and Evolutionary Synthesis, Postboks 1066 Blindern 0316 Oslo, Norway
| | - Aida Verdes
- Department of Biodiversity and Evolutionary Biology, Museo Nacional de Ciencias Naturales, José Gutiérrez Abascal 2, 28006 Madrid, Spain
| | - Giulia Zancolli
- Department of Ecology and Evolution, University of Lausanne, 1015 Lausanne, Switzerland.,Swiss Institute of Bioinformatics, 1015 Lausanne, Switzerland
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7
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Calvete JJ, Pla D, Els J, Carranza S, Damm M, Hempel BF, John EBO, Petras D, Heiss P, Nalbantsoy A, Göçmen B, Süssmuth RD, Calderón-Celis F, Nosti AJ, Encinar JR. Combined Molecular and Elemental Mass Spectrometry Approaches for Absolute Quantification of Proteomes: Application to the Venomics Characterization of the Two Species of Desert Black Cobras, Walterinnesia aegyptia and Walterinnesia morgani. J Proteome Res 2021; 20:5064-5078. [PMID: 34606723 PMCID: PMC8576837 DOI: 10.1021/acs.jproteome.1c00608] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
![]()
We report a novel hybrid, molecular
and elemental mass spectrometry
(MS) setup for the absolute quantification of snake venom proteomes
shown here for two desert black cobra species within the genus Walterinnesia, Walterinnesia aegyptia and Walterinnesia morgani. The experimental
design includes the decomplexation of the venom samples by reverse-phase
chromatography independently coupled to four mass spectrometry systems:
the combined bottom-up and top-down molecular MS for protein identification
and a parallel reverse-phase microbore high-performance liquid chromatograph
(RP-μHPLC) on-line to inductively coupled plasma (ICP-MS/MS)
elemental mass spectrometry and electrospray ionization quadrupole
time-of-flight mass spectrometry (ESI-QToF MS). This allows to continuously
record the absolute sulfur concentration throughout the chromatogram
and assign it to the parent venom proteins separated in the RP-μHPLC-ESI-QToF
parallel run via mass profiling. The results provide a locus-resolved
and quantitative insight into the three desert black cobra venom proteome
samples. They also validate the units of measure of our snake venomics
strategy for the relative quantification of snake venom proteomes
as % of total venom peptide bonds as a proxy for the % by weight of
the venom toxins/toxin families. In a more general context, our work
may pave the way for broader applications of hybrid elemental/molecular
MS setups in diverse areas of proteomics.
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Affiliation(s)
- Juan J Calvete
- Laboratorio de Venómica Evolutiva y Traslational, Instituto de Biomedicina de Valencia, Consejo Superior de Investigaciones Científicas (CSIC), Jaume Roig 11, 46010 Valencia, Spain
| | - Davinia Pla
- Laboratorio de Venómica Evolutiva y Traslational, Instituto de Biomedicina de Valencia, Consejo Superior de Investigaciones Científicas (CSIC), Jaume Roig 11, 46010 Valencia, Spain
| | - Johannes Els
- Environment and Protected Areas Authority, 82828 Sharjah, United Arab Emirates
| | - Salvador Carranza
- Institute of Evolutionary Biology, CSIC-Universitat Pompeu Fabra, 08003 Barcelona, Spain
| | - Maik Damm
- Department of Chemistry, Technische Universität Berlin, 10623 Berlin, Germany
| | - Benjamin-Florian Hempel
- Department of Chemistry, Technische Universität Berlin, 10623 Berlin, Germany.,BIH Center for Regenerative Therapies BCRT, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - Elisa B O John
- Center of Biotechnology, Universidade Federal do Rio Grande do Sul, CEP 91501-970 Porto Alegre, RS, Brazil
| | - Daniel Petras
- CMFI Cluster of Excellence, Interfaculty Institute of Microbiology and Medicine, University of Túbingen, 72076 Tübingen, Germany
| | - Paul Heiss
- Department of Chemistry, Technische Universität Berlin, 10623 Berlin, Germany
| | - Ayse Nalbantsoy
- Department of Bioengineering, Faculty of Engineering, Ege University, 35100 Bornova, Izmir, Turkey
| | - Bayram Göçmen
- Zoology Section, Department of Biology, Faculty of Science, Ege University, 35100 Bornova, Izmir, Turkey
| | - Roderich D Süssmuth
- Department of Chemistry, Technische Universität Berlin, 10623 Berlin, Germany
| | | | - Alicia Jiménez Nosti
- Department of Physical and Analytical Chemistry, University of Oviedo, 33006 Oviedo, Spain
| | - Jorge Ruiz Encinar
- Department of Physical and Analytical Chemistry, University of Oviedo, 33006 Oviedo, Spain
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Ammer-Herrmenau C, Asendorf T, Beyer G, Buchholz SM, Cameron S, Damm M, Frost F, Henker R, Jaster R, Phillip V, Placzek M, Ratei C, Sirtl S, van den Berg T, Weingarten MJ, Woitalla J, Mayerle J, Ellenrieder V, Neesse A. Study protocol P-MAPS: microbiome as predictor of severity in acute pancreatitis-a prospective multicentre translational study. BMC Gastroenterol 2021; 21:304. [PMID: 34332533 PMCID: PMC8325304 DOI: 10.1186/s12876-021-01885-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Accepted: 07/22/2021] [Indexed: 12/15/2022] Open
Abstract
Background Acute pancreatitis (AP) is an inflammatory disorder that causes a considerable economic health burden. While the overall mortality is low, around 20% of patients have a complicated course of disease resulting in increased morbidity and mortality. There is an emerging body of evidence that the microbiome exerts a crucial impact on the pathophysiology and course of AP. For several decades multiple clinical and laboratory parameters have been evaluated, and complex scoring systems were developed to predict the clinical course of AP upon admission. However, the majority of scoring systems are determined after several days and achieve a sensitivity around 70% for early prediction of severe AP. Thus, continued efforts are required to investigate reliable biomarkers for the early prediction of severity in order to guide early clinical management of AP patients.
Methods We designed a multi-center, prospective clinical-translational study to test whether the orointestinal microbiome may serve as novel early predictor of the course, severity and outcome of patients with AP. We will recruit 400 AP patients and obtain buccal and rectal swabs within 72 h of admission to the hospital. Following DNA extraction, microbiome analysis will be performed using 3rd generation sequencing Oxford Nanopore Technologies (ONT) for 16S rRNA and metagenomic sequencing. Alpha- and beta-diversity will be determined and correlated to the revised Atlanta classification and additional clinical outcome parameters such as the length of hospital stay, number and type of complications, number of interventions and 30-day mortality. Discussion If AP patients show a distinct orointestinal microbiome dependent on the severity and course of the disease, microbiome sequencing could rapidly be implemented in the early clinical management of AP patients in the future. Trial registration: ClinicalTrials.gov Identifier: NCT04777812
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Affiliation(s)
- C Ammer-Herrmenau
- Department of Gastroenterology, Gastrointestinal Oncology and Endocrinology, University Medical Center, Robert-Kochsstraße 40, 37075, Göttingen, Germany
| | - T Asendorf
- Department of Medical Statistics, University Medical Center, Göttingen, Germany
| | - G Beyer
- Department of Medicine II, University Hospital, LMU Munich, Munich, Germany
| | - S M Buchholz
- Department of Gastroenterology, Gastrointestinal Oncology and Endocrinology, University Medical Center, Robert-Kochsstraße 40, 37075, Göttingen, Germany
| | - S Cameron
- Department of Gastroenterology, Gastrointestinal Oncology and Endocrinology, University Medical Center, Robert-Kochsstraße 40, 37075, Göttingen, Germany
| | - M Damm
- Department of Medicine I, University Hospital Halle, Halle, Germany
| | - F Frost
- Department of Medicine A, University Medicine Greifswald, Greifswald, Germany
| | - R Henker
- Division of Gastroenterology, Medical Department II, University Hospital of Leipzig, Leipzig, Germany
| | - R Jaster
- Department of Medicine II, University Hospital Rostock, Rostock, Germany
| | - V Phillip
- Department of Medicine II, University Hospital rechts der Isar, Technical University Munich, Munich, Germany
| | - M Placzek
- Department of Medical Statistics, University Medical Center, Göttingen, Germany
| | - C Ratei
- Department of Gastroenterology, Gastrointestinal Oncology and Endocrinology, University Medical Center, Robert-Kochsstraße 40, 37075, Göttingen, Germany
| | - S Sirtl
- Department of Medicine II, University Hospital, LMU Munich, Munich, Germany
| | - T van den Berg
- Department of Medical Bioinformatics, University Medical Center, Göttingen, Germany
| | - M J Weingarten
- Department of Gastroenterology, Gastrointestinal Oncology and Endocrinology, University Medical Center, Robert-Kochsstraße 40, 37075, Göttingen, Germany
| | - J Woitalla
- Department of Medicine II, University Hospital Rostock, Rostock, Germany
| | - J Mayerle
- Department of Medicine II, University Hospital, LMU Munich, Munich, Germany
| | - V Ellenrieder
- Department of Gastroenterology, Gastrointestinal Oncology and Endocrinology, University Medical Center, Robert-Kochsstraße 40, 37075, Göttingen, Germany
| | - A Neesse
- Department of Gastroenterology, Gastrointestinal Oncology and Endocrinology, University Medical Center, Robert-Kochsstraße 40, 37075, Göttingen, Germany.
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Damm M, Hempel BF, Süssmuth RD. Old World Vipers-A Review about Snake Venom Proteomics of Viperinae and Their Variations. Toxins (Basel) 2021; 13:toxins13060427. [PMID: 34204565 PMCID: PMC8235416 DOI: 10.3390/toxins13060427] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [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: 05/26/2021] [Revised: 06/11/2021] [Accepted: 06/16/2021] [Indexed: 12/12/2022] Open
Abstract
Fine-tuned by millions of years of evolution, snake venoms have frightened but also fascinated humanity and nowadays they constitute potential resources for drug development, therapeutics and antivenoms. The continuous progress of mass spectrometry techniques and latest advances in proteomics workflows enabled toxinologists to decipher venoms by modern omics technologies, so-called ‘venomics’. A tremendous upsurge reporting on snake venom proteomes could be observed. Within this review we focus on the highly venomous and widely distributed subfamily of Viperinae (Serpentes: Viperidae). A detailed public literature database search was performed (2003–2020) and we extensively reviewed all compositional venom studies of the so-called Old-World Vipers. In total, 54 studies resulted in 89 venom proteomes. The Viperinae venoms are dominated by four major, four secondary, six minor and several rare toxin families and peptides, respectively. The multitude of different venomics approaches complicates the comparison of venom composition datasets and therefore we differentiated between non-quantitative and three groups of quantitative workflows. The resulting direct comparisons within these groups show remarkable differences on the intra- and interspecies level across genera with a focus on regional differences. In summary, the present compilation is the first comprehensive up-to-date database on Viperinae venom proteomes and differentiating between analytical methods and workflows.
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Affiliation(s)
- Maik Damm
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany;
| | - Benjamin-Florian Hempel
- BIH Center for Regenerative Therapies, Berlin Institute of Health at Charité-Universitätsmedizin Berlin, (BCRT), 10117 Berlin, Germany;
| | - Roderich D. Süssmuth
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany;
- Correspondence: ; Tel.: +49-(0)30-314-24205
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10
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Liu DT, Pellegrino R, Sabha M, Aytug A, Aytug A, Damm M, Poletti SC, Croy I, Hohner A, Oleszkiewicz A, Mandy C, Hummel T. Factors associated with relevant olfactory recovery after olfactory training: a retrospective study including 601 participants. Rhinology 2021; 59:91-97. [PMID: 33544097 DOI: 10.4193/rhin20-262] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE Olfactory training (OT) represents a therapeutic option for multiple etiologies of olfactory dysfunction (OD) that also benefits normosmic subjects. In this retrospective study, we report the effectiveness of OT and factors associated with relevant changes in olfactory function (OF) in large groups of normosmic participants and patients with OD, including a control group that performed no training. METHODS This was a retrospective pooled analysis including 2 treatment cohorts of 8 previously published studies. Adult participants that either presented with the major complaint of quantitative OD or normosmic volunteers were recruited at various ENT clinics and received OT or no training. The outcome was based on changes in objective olfactory test scores after OT. RESULTS A total of 601 patients with OD or normosmic subjects were included. OT was more effective compared to no training. No interaction was found between OT and OF. In multivariate analysis, higher baseline OF (adjusted odds ratio, aOR, 0.93) and posttraumatic (aOR, 0.29) or idiopathic OD (aOR, 0.18) compared to postinfectious causes were significantly associated with lower odds of relevant improvements in patients with OD receiving OT. Subgroup analysis of normosmic participants receiving OT further revealed a significant association of lower age and baseline olfactory function with improvements of overall OF. CONCLUSIONS This study demonstrated that OT was more effective than no training in patients with various causes of OD. Additionally, baseline olfactory performance and etiology of OD were identified as important factors associated with relevant improvements after OT.
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Affiliation(s)
- D T Liu
- Smell and Taste Clinic, Department of Otorhinolaryngology, Medical Faculty Carl-Gustav Carus, Technical University of Dresden, Dresden, Germany and Department of Otorhinolaryngology, Head and Neck Surgery, Medical University of Vienna, Vienna, Austria
| | - R Pellegrino
- Smell and Taste Clinic, Department of Otorhinolaryngology, Medical Faculty Carl-Gustav Carus, Technical University of Dresden, Dresden, Germany and Department of Food Science, Institute of Agriculture, University of Tennessee, Knoxville, Tennessee, U.S.A
| | - M Sabha
- Smell and Taste Clinic, Department of Otorhinolaryngology, Medical Faculty Carl-Gustav Carus, Technical University of Dresden, Dresden, Germany
| | - A Aytug
- Department of Otorhinolaryngology, Biruni University Medicine Faculty, Istanbul, Turkey
| | - A Aytug
- Department of Otorhinolaryngology, Biruni University Medicine Faculty, Istanbul, Turkey
| | - M Damm
- ENT-Medicine Cologne (HNO-Heilkunde Koln) and University Hospitals of Cologne, Cologne, Germany
| | - S C Poletti
- Smell and Taste Clinic, Department of Otorhinolaryngology, Medical Faculty Carl-Gustav Carus, Technical University of Dresden, Dresden, Germany
| | - I Croy
- Smell and Taste Clinic, Department of Otorhinolaryngology, Medical Faculty Carl-Gustav Carus, Technical University of Dresden, Dresden, Germany
| | - A Hohner
- Smell and Taste Clinic, Department of Otorhinolaryngology, Medical Faculty Carl-Gustav Carus, Technical University of Dresden, Dresden, Germany
| | - A Oleszkiewicz
- Smell and Taste Clinic, Department of Otorhinolaryngology, Medical Faculty Carl-Gustav Carus, Technical University of Dresden, Dresden, Germany and Institute of Psychology, University of Wroclaw, Wroclaw, Poland
| | - C Mandy
- Smell and Taste Clinic, Department of Otorhinolaryngology, Medical Faculty Carl-Gustav Carus, Technical University of Dresden, Dresden, Germany
| | - T Hummel
- Smell and Taste Clinic, Department of Otorhinolaryngology, Medical Faculty Carl-Gustav Carus, Technical University of Dresden, Dresden, Germany
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Liu DT, Pellegrino R, Sabha M, Altundag A, Damm M, Poletti SC, Croy I, Hähner A, Oleszkiewicz A, Cuevas M, Hummel T. Factors associated with relevant olfactory recovery after olfactory training: a retrospective study including 601 participants. Rhinology 2020; 0:2651. [PMID: 32901616 DOI: 10.4193/rhin20.262] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Olfactory training (OT) represents a therapeutic option for multiple etiologies of olfactory dysfunction (OD) that also benefits normosmic subjects. In this retrospective study, we report the effectiveness of OT and factors associated with relevant changes in olfactory function (OF) in large groups of normosmic participants and patients with OD, including a control group that performed no training. METHODS This was a retrospective pooled analysis including 2 treatment cohorts of 8 previously published studies. Adult partici- pants that either presented with the major complaint of quantitative OD or normosmic volunteers were recruited at various ENT clinics and received OT or no training. The outcome was based on changes in objective olfactory test scores after OT. RESULTS A total of 601 patients with OD or normosmic subjects were included. OT was more effective compared to no training. No interaction was found between OT and OF. In multivariate analysis, higher baseline OF (adjusted odds ratio, aOR, 0.93) and posttraumatic (aOR, 0.29) or idiopathic OD (aOR, 0.18) compared to postinfectious causes were significantly associated with lower odds of relevant improvements in patients with OD receiving OT. Subgroup analysis of normosmic participants receiving OT further revealed a significant association of age and baseline olfactory function with improvements of overall OF. CONCLUSIONS This study demonstrated that OT was more effective than no training in patients with various causes of OD. Additi- onally, baseline olfactory performance and etiology of OD were identified as important factors associated with relevant improve- ments after OT.
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Affiliation(s)
- D T Liu
- Smell and Taste Clinic, Department of Otorhinolaryngology, Medical Faculty Carl-Gustav Carus, Technical University of Dresden, Dresden, Germany
- Department of Otorhinolaryngology, Head and Neck Surgery, Medical University of Vienna, Vienna, Austria
| | - R Pellegrino
- Smell and Taste Clinic, Department of Otorhinolaryngology, Medical Faculty Carl-Gustav Carus, Technical University of Dresden, Dresden, Germany
- Department of Food Science, Institute of Agriculture, University of Tennessee, Knoxville, Tennessee, U.S.A
| | - M Sabha
- Smell and Taste Clinic, Department of Otorhinolaryngology, Medical Faculty Carl-Gustav Carus, Technical University of Dresden, Dresden, Germany
| | - A Altundag
- Department of Otorhinolaryngology, Biruni University Medicine Faculty, Istanbul, Turkey
| | - M Damm
- ENT-Medicine Cologne (HNO-Heilkunde Köln) and University Hospitals of Cologne, Cologne, Germany
| | - S C Poletti
- Smell and Taste Clinic, Department of Otorhinolaryngology, Medical Faculty Carl-Gustav Carus, Technical University of Dresden, Dresden, Germany
| | - I Croy
- Smell and Taste Clinic, Department of Otorhinolaryngology, Medical Faculty Carl-Gustav Carus, Technical University of Dresden, Dresden, Germany
| | - A Hähner
- Smell and Taste Clinic, Department of Otorhinolaryngology, Medical Faculty Carl-Gustav Carus, Technical University of Dresden, Dresden, Germany
| | - A Oleszkiewicz
- Smell and Taste Clinic, Department of Otorhinolaryngology, Medical Faculty Carl-Gustav Carus, Technical University of Dresden, Dresden, Germany
- Institute of Psychology, University of Wroclaw, Wroclaw, Poland
| | - M Cuevas
- Smell and Taste Clinic, Department of Otorhinolaryngology, Medical Faculty Carl-Gustav Carus, Technical University of Dresden, Dresden, Germany
| | - T Hummel
- Smell and Taste Clinic, Department of Otorhinolaryngology, Medical Faculty Carl-Gustav Carus, Technical University of Dresden, Dresden, Germany
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Hempel BF, Damm M, Mrinalini, Göçmen B, Karış M, Nalbantsoy A, Kini RM, Süssmuth RD. Extended Snake Venomics by Top-Down In-Source Decay: Investigating the Newly Discovered Anatolian Meadow Viper Subspecies, Vipera anatolica senliki. J Proteome Res 2020; 19:1731-1749. [PMID: 32073270 DOI: 10.1021/acs.jproteome.9b00869] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Herein, we report on the venom proteome of Vipera anatolica senliki, a recently discovered and hitherto unexplored subspecies of the critically endangered Anatolian meadow viper endemic to the Antalya Province of Turkey. Integrative venomics, including venom gland transcriptomics as well as complementary bottom-up and top-down proteomics analyses, were applied to fully characterize the venom of V. a. senliki. Furthermore, the classical top-down venomics approach was extended to elucidate the venom proteome by an alternative in-source decay (ISD) proteomics workflow using the reducing matrix 1,5-diaminonaphthalene. Top-down ISD proteomics allows for disulfide bond counting and effective de novo sequencing-based identification of high-molecular-weight venom constituents, both of which are difficult to achieve by commonly established top-down approaches. Venom gland transcriptome analysis identified 96 toxin transcript annotations from 18 toxin families. Relative quantitative snake venomics revealed snake venom metalloproteinases (42.9%) as the most abundant protein family, followed by several less dominant toxin families. Online mass profiling and top-down venomics provide a detailed insight into the venom proteome of V. a. senliki and facilitate a comparative analysis of venom variability for the closely related subspecies, Vipera anatolica anatolica.
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Affiliation(s)
- Benjamin-Florian Hempel
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany
| | - Maik Damm
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany
| | - Mrinalini
- Department of Biological Sciences, National University of Singapore, 14 Science Drive 4, Singapore 117543
| | - Bayram Göçmen
- Department of Biology, Faculty of Science, Ege University, 35100 Bornova, 35100 Izmir, Turkey
| | - Mert Karış
- Department of Biology, Faculty of Science, Ege University, 35100 Bornova, 35100 Izmir, Turkey
| | - Ayse Nalbantsoy
- Department of Bioengineering, Faculty of Engineering, Ege University, 35100 Izmir, Bornova, Turkey
| | - R Manjunatha Kini
- Department of Biological Sciences, National University of Singapore, 14 Science Drive 4, Singapore 117543.,Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, 16, Medical Drive, Singapore 117600
| | - Roderich D Süssmuth
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany
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Eleftheriadou I, Brett S, Domogala A, Patasic L, Kijewska M, Soor K, Georgouli M, Dopierala J, Fisher P, Jing J, Euesden J, Auger K, Roberts R, O’Sullivan S, Castelletti L, Damm M, Pankov D, Johnson L, Shalabi A, Britten C. NY-ESO-1 and LAGE1A: An emerging target for cell therapies in solid tumours. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz253.055] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Ozverel CS, Damm M, Hempel BF, Göçmen B, Sroka R, Süssmuth RD, Nalbantsoy A. Investigating the cytotoxic effects of the venom proteome of two species of the Viperidae family (Cerastes cerastes and Cryptelytrops purpureomaculatus) from various habitats. Comp Biochem Physiol C Toxicol Pharmacol 2019; 220:20-30. [PMID: 30825636 DOI: 10.1016/j.cbpc.2019.02.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [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] [Received: 10/23/2018] [Revised: 02/20/2019] [Accepted: 02/25/2019] [Indexed: 12/20/2022]
Abstract
Animal secretions are of great interest in terms of drug development due to their complex protein and peptide composition. Especially, in the field of therapeutic medications such as anti-cancer drugs snake venoms receive attention. In this study, we address two Viperidae species from various habitats with a particular focus on the cytotoxic potential along with the decomplexation of the venom proteome: the horned desert viper (Cerastes cerastes), native to desert regions of North Africa and the mangrove pit viper (Cryptelytrops purpureomaculatus), found in coastal forests of Southeast Asia. Initial cytotoxic screenings of the crude venoms revealed diverse activity, with the highest effect against SHSY5Y human glioblastoma carcinoma cells compared to other cancerous and non-cancerous cell lines. In-depth cytotoxicity studies of SHSY5Y cells with purified venom fractions revealed heterodimeric disintegrins from C. cerastes venom, which exerted a high cytotoxic activity with IC50 values from 0.11 to 0.58 μM and a disintegrin-like effect on SHSY5Y morphology was observed due to cell detachment. Furthermore, two polyproline BPP-related peptides, one PLA2 and a peptide-rich fraction were determined for C. purpureomaculatus with moderate IC50 values between 3 and 51 μM. Additionally, the decryption of the venom proteomes by snake venomic mass spectrometry and comparison of the same species from different habitats revealed slight differences in the composition.
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Affiliation(s)
- Cenk Serhan Ozverel
- Department of Biology, Faculty of Science, Ege University, Bornova, 35100 Izmir, Turkey
| | - Maik Damm
- Technische Universität Berlin, Institut für Chemie, Strasse des 17. Juni 124, 10623 Berlin, Germany
| | - Benjamin-Florian Hempel
- Technische Universität Berlin, Institut für Chemie, Strasse des 17. Juni 124, 10623 Berlin, Germany.
| | - Bayram Göçmen
- Zoology Section, Department of Biology, Faculty of Science, Ege University, Bornova, 35100 Izmir, Turkey
| | - Robert Sroka
- Technische Universität Berlin, Institut für Chemie, Strasse des 17. Juni 124, 10623 Berlin, Germany
| | - Roderich D Süssmuth
- Technische Universität Berlin, Institut für Chemie, Strasse des 17. Juni 124, 10623 Berlin, Germany
| | - Ayse Nalbantsoy
- Department of Bioengineering, Faculty of Engineering, Ege University, Bornova, 35100 Izmir, Turkey.
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Damm M, Hempel BF, Nalbantsoy A, Süssmuth RD. Comprehensive Snake Venomics of the Okinawa Habu Pit Viper, Protobothrops flavoviridis, by Complementary Mass Spectrometry-Guided Approaches. Molecules 2018; 23:molecules23081893. [PMID: 30060607 PMCID: PMC6222445 DOI: 10.3390/molecules23081893] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 07/24/2018] [Accepted: 07/27/2018] [Indexed: 11/16/2022] Open
Abstract
The Asian world is home to a multitude of venomous and dangerous snakes, which are used to induce various medical effects in the preparation of traditional snake tinctures and alcoholics, like the Japanese snake wine, named Habushu. The aim of this work was to perform the first quantitative proteomic analysis of the Protobothrops flavoviridis pit viper venom. Accordingly, the venom was analyzed by complimentary bottom-up and top-down mass spectrometry techniques. The mass spectrometry-based snake venomics approach revealed that more than half of the venom is composed of different phospholipases A2 (PLA₂). The combination of this approach and an intact mass profiling led to the identification of the three main Habu PLA₂s. Furthermore, nearly one-third of the total venom consists of snake venom metalloproteinases and disintegrins, and several minor represented toxin families were detected: C-type lectin-like proteins (CTL), cysteine-rich secretory proteins (CRISP), snake venom serine proteases (svSP), l-amino acid oxidases (LAAO), phosphodiesterase (PDE) and 5'-nucleotidase. Finally, the venom of P. flavoviridis contains certain bradykinin-potentiating peptides and related peptides, like the svMP inhibitors, pEKW, pEQW, pEEW and pENW. In preliminary MTT cytotoxicity assays, the highest cancerous-cytotoxicity of crude venom was measured against human neuroblastoma SH-SY5Y cells and shows disintegrin-like effects in some fractions.
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Affiliation(s)
- Maik Damm
- Institut für Chemie, Technische Universität Berlin, 10623 Berlin, Germany.
| | | | - Ayse Nalbantsoy
- Department of Bioengineering, Ege University, 35100 Izmir, Turkey.
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Hummel T, Whitcroft KL, Andrews P, Altundag A, Cinghi C, Costanzo RM, Damm M, Frasnelli J, Gudziol H, Gupta N, Haehne A, Holbrook E, Hong SC, Hornung D, Hüttenbrink KB, Kamel R, Kobayashi M, Konstantinidis I, Landis BN, Leopold DA, Macchi A, Miwa T, Moesges R, Mullol J, Mueller CA, Ottaviano G, Passali GC, Philpott C, Pinto JM, Ramakrishnan VJ, Rombaux P, Roth Y, Schlosser RA, Shu B, Soler G, Stjärne P, Stuck BA, Vodicka J, Welge-Luessen A. Position paper on olfactory dysfunction. Rhinology 2018. [PMID: 29528615 DOI: 10.4193/rhino16.248] [Citation(s) in RCA: 373] [Impact Index Per Article: 62.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Background Olfactory dysfunction is an increasingly recognised condition, associated with reduced quality of life and major
health outcomes such as neurodegeneration and death. However, translational research in this field is limited by heterogeneity in methodological approach, including definitions of impairment, improvement and appropriate assessment techniques. Accordingly, effective treatments for smell loss are limited. In an effort to encourage high quality and comparable work in this field, among others, we propose the following ideas and recommendations. Whilst the full set of recommendations are outlined in the main document, points include the following:
• Patients with suspected olfactory loss should undergo a full examination of the head and neck, including rigid nasal endoscopy
with small diameter endoscopes.
• Subjective olfactory assessment should not be undertaken in isolation, given its poor reliability.
• Psychophysical assessment tools used in clinical and research settings should include reliable and validated tests of odour
threshold, and/or one of odour identification or discrimination.
• Comprehensive chemosensory assessment should include gustatory screening.
• Smell training can be helpful in patients with olfactory loss of several aetiologies. Conclusions We hope the current manuscript will encourage clinicians and researchers to adopt a common language, and in so doing, increase the methodological quality, consistency and generalisability of work in this field.
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Reichmann K, Yong-Hing C, Damm M, Risse J, Ahmadzadehfar H, Logvinski T, Guhlke S, Biersack HJ, Sabet A, Ezziddin S. Early prediction of tumour response to PRRT. Nuklearmedizin 2018; 52:170-7. [DOI: 10.3413/nukmed-0581-13-05] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2013] [Accepted: 07/01/2013] [Indexed: 01/05/2023]
Abstract
Summary[177Lu-DOTA0, Tyr3]-octreotate (177Lu-octreotate) in peptide receptor radionuclide therapy (PRRT) offers direct intra-therapeutic dosimetry. The aim of this study was to compare tumour and non-tumour parameters and assess intra-individual variations. Patients, methods: Retrospective analysis of 53 consecutive PRRT treatment cycles (mean activity of 7.53 ± 0.46 GBq 177Lu-octreotate, intended four cycles at intervals of 10–14 weeks, standard nephroprotection) in 27 GEP NET patients. Extended planar dosimetry with serial wholebody imaging on selected, non-superimposed tumour and non-tumour regions; liver (LM), bone (BM), and other (OM) metastases. The per-cycle variation was compared with posttreatment response (CT/MRI three months post-treatment, modified SWOG criteria). Results: Residence time in tumor lesions (133–147 h) exceeded that in kidneys (93 h). Tumour-to-kidney absorbed dose ratios ranged from 14 to 28 (LM, BM, OM). Intra-individual per-cycle dose variation was insignificant for kidneys, but significant for metastases (LM, BM, and OM; p < 0.05). The mean per-cycle decrease of tumour absorbed dose (_D/A0[%]) was linked to morphologic response after PRRT. A mean decrease of >20% was predictive of a partial or minor remission in all 11 evaluable patients, while absent significant dose reduction indicated stable or progressive disease in 4/5 patients. The dose decrease was unrelated to volume effects and also observed for BM. Conclusion: Besides confirmation of a favourable tumour-to-kidney parameter relation for 177Lu-octreotate, stepwise intra-lesional comparison seems to imply a prognostic impact of tumor dosimetry: The early per-cycle change _D/A0 between treatment cycles may predict the outcome after PRRT. Larger studies are needed to confirm this finding.
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Hempel BF, Damm M, Göçmen B, Karis M, Oguz MA, Nalbantsoy A, Süssmuth RD. Comparative Venomics of the Vipera ammodytes transcaucasiana and Vipera ammodytes montandoni from Turkey Provides Insights into Kinship. Toxins (Basel) 2018; 10:toxins10010023. [PMID: 29301241 PMCID: PMC5793110 DOI: 10.3390/toxins10010023] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [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: 09/22/2017] [Revised: 12/26/2017] [Accepted: 12/28/2017] [Indexed: 12/15/2022] Open
Abstract
The Nose-horned Viper (Vipera ammodytes) is one of the most widespread and venomous snakes in Europe, which causes high frequent snakebite accidents. The first comprehensive venom characterization of the regional endemic Transcaucasian Nose-horned Viper (Vipera ammodytes transcaucasiana) and the Transdanubian Sand Viper (Vipera ammodytes montandoni) is reported employing a combination of intact mass profiling and bottom-up proteomics. The bottom-up analysis of both subspecies identified the major snake protein families of viper venoms. Furthermore, intact mass profiling revealed the presence of two tripeptidic metalloprotease inhibitors and their precursors. While previous reports applied multivariate analysis techniques to clarify the taxonomic status of the subspecies, an accurate classification of Vipera ammodytestranscaucasiana is still part of the ongoing research. The comparative analysis of the viper venoms on the proteome level reveals a close relationship between the Vipera ammodytes subspecies, which could be considered to clarify the classification of the Transcaucasian Nose-horned Viper. However, the slightly different ratio of some venom components could be indicating interspecific variations of the two studied subspecies or intraspecies alternations based on small sample size. Additionally, we performed a bioactivity screening with the crude venoms against several human cancerous and non-cancerous cell lines, which showed interesting results against a human breast adenocarcinoma epithelial cell line. Several fractions of Vipera a. transcaucasiana demonstrated a strong cytotoxic effect on triple negative MDA MB 231 breast cancer cells.
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Affiliation(s)
| | - Maik Damm
- Department of Chemistry, Technische Universität Berlin, 10623 Berlin, Germany.
| | - Bayram Göçmen
- Department of Biology, Ege University, 35100 Izmir, Turkey.
| | - Mert Karis
- Department of Biology, Ege University, 35100 Izmir, Turkey.
| | | | - Ayse Nalbantsoy
- Department of Bioengineering, Ege University, 35100 Izmir, Turkey.
| | - Roderich D Süssmuth
- Department of Chemistry, Technische Universität Berlin, 10623 Berlin, Germany.
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Hummel T, Whitcroft KL, Andrews P, Altundag A, Cinghi C, Costanzo RM, Damm M, Frasnelli J, Gudziol H, Gupta N, Haehner A, Holbrook E, Hong SC, Hornung D, Hüttenbrink KB, Kamel R, Kobayashi M, Konstantinidis I, Landis BN, Leopold DA, Macchi A, Miwa T, Moesges R, Mullol J, Mueller CA, Ottaviano G, Passali GC, Philpott C, Pinto JM, Ramakrishnan VJ, Rombaux P, Roth Y, Schlosser RA, Shu B, Soler G, Stjärne P, Stuck BA, Vodicka J, Welge-Luessen A. Position paper on olfactory dysfunction. Rhinology 2017. [PMID: 28623665 DOI: 10.4193/rhin16.248] [Citation(s) in RCA: 95] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Olfactory dysfunction is an increasingly recognised condition, associated with reduced quality of life and major health outcomes such as neurodegeneration and death. However, translational research in this field is limited by heterogeneity in methodological approach, including definitions of impairment, improvement and appropriate assessment techniques. Accordingly, effective treatments for smell loss are limited. In an effort to encourage high quality and comparable work in this field, among others, we propose the following ideas and recommendations. Whilst the full set of recommendations are outlined in the main document, points include the following: - Patients with suspected olfactory loss should undergo a full examination of the head and neck, including rigid nasal endoscopy with small diameter endoscopes. - Subjective olfactory assessment should not be undertaken in isolation, given its poor reliability. - Psychophysical assessment tools used in clinical and research settings should include reliable and validated tests of odour threshold, and/or one of odour identification or discrimination. - Comprehensive chemosensory assessment should include gustatory screening. - Smell training can be helpful in patients with olfactory loss of several aetiologies. CONCLUSIONS We hope the current manuscript will encourage clinicians and researchers to adopt a common language, and in so doing, increase the methodological quality, consistency and generalisability of work in this field.
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Affiliation(s)
- T Hummel
- Smell and Taste Clinic, Department of Otorhinolaryngology, TU Dresden, Dresden, Germany
| | - K L Whitcroft
- Smell and Taste Clinic, Department of Otorhinolaryngology, TU Dresden, Dresden, Germany
| | - P Andrews
- UCL Ear Institute, Faculty of Brain Sciences, University College London, London, UK
| | - A Altundag
- Department of Otorhinolaryngoglogy, Istanbul Surgery Hospital, Istanbul, Turkey
| | - C Cinghi
- Department of Otolaryngology; Eskisehir Osmangazi University, Istanbul, Turkey
| | - R M Costanzo
- Smell and Taste Disorders Center, Department of Otolaryngology Head and Neck Surgery, VCU School of Medicine, Richmond, VA, USA
| | - M Damm
- Department of Otorhinolaryngology, Head and Neck Surgery, University of Cologne Medical Center, Cologne, Germany
| | - J Frasnelli
- Research Chair in Chemosensory Neuroanatomy, Department of Anatomy, Universite du Quebec a Trois-Rivieres, Trois-Rivieres, QC, Canada
| | - H Gudziol
- Department of Otorhinolaryngology, University of Jena, Jena, Germany
| | - N Gupta
- Department of Otorhinolaryngology, University College of Medical Sciences and GTB Hospital, Delhi, India
| | - A Haehner
- Smell and Taste Clinic, Department of Otorhinolaryngology, TU Dresden, Dresden, Germany
| | - E Holbrook
- Department of Otolaryngology, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA, USA
| | - S C Hong
- Department of Otorhinolaryngology, Konkuk University Medical Center, Hwayang-dong, Gwangjin-gu, Seoul, South Korea
| | - D Hornung
- Dept. of Biology, St. Lawrence University, Canton, NY, USA
| | | | - R Kamel
- Department of Otorhinolaryngology, Cairo University, Cairo, Egypt
| | - M Kobayashi
- Department of Otorhinolaryngology-Head and Neck Surgery, Mie University Graduate School of Medicine, Mie, Japan
| | - I Konstantinidis
- Smell and Taste Clinic, Second Academic Otorhinolaryngology Department, Papageorgiou Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - B N Landis
- Department for ENT, Head and Neck Surgery, Bern University Hospital, Bern, Switzerland
| | - D A Leopold
- Division of Otorhinolaryngology-Head and Neck Surgery, Department of Surgery, University of Vermont Medical Center, Burlington, Vermont, USA
| | - A Macchi
- ENT Clinic, University of Insubria, ASST, sette laghi, Varese, Italy
| | - T Miwa
- Department of Otorhinolaryngology, Kanazawa Medical University, Uchinada, Kahoku, Ishikawa, Japan
| | - R Moesges
- Institute of Medical Statistics, Informatics and Epidemiology, University Hospital of Cologne, Cologne, Germany
| | - J Mullol
- Rhinology Unit and Smell Clinic, IDIBAPS, University of Barcelona, Barcelona, Catalonia, Spain
| | - C A Mueller
- Department of Otorhinolaryngology, Medical University of Vienna, Vienna, Austria
| | - G Ottaviano
- Department of Neurosciences DNS, Otolaryngology Section, University, Padua, Italy
| | - G C Passali
- Head and Neck section, Department of Aging, Neurosciences, Head and Neck and Orthopedic; Catholic University of Sacred heart, A. Gemelli Hospital Foundation, Rome, Italy
| | - C Philpott
- Norwich Medical School, University of East Anglia, Norwich, UK
| | - J M Pinto
- Section of Otolaryngology-Head and Neck Surgery, The University of Chicago Medicine and Biological Sciences, Chicago, IL, USA
| | - V J Ramakrishnan
- Departments of Otolaryngology and Neurosurgery, University of Colorado, Aurora, CO, USA
| | - P Rombaux
- Universite Catholique de Louvain, Institute of Neurosciences, Unit of Otorhinolaryngology, Brussels, Belgium
| | - Y Roth
- The Institute for Nose and Sinus Therapy and Clinical Investigations, Department of Otolaryngology - Head and Neck Surgery, Edith Wolfson Medical Center, Tel Aviv University Sackler Faculty of Medicine, Holon, Israel
| | - R A Schlosser
- Department of Otolaryngology, Head and Neck Surgery, Medical Univeristy of South Carolina, Charleston, SC, USA
| | - B Shu
- Department of Otolaryngology, Taipei Veterans General Hospital, National Yang Ming University School of Medicine Faculty of Medicine, Taipei, Taiwan
| | - G Soler
- Division of Otorhinolaryngology, Area of Smell and Taste, Hospital de Clinicas, University of Buenos Aires, Buenos Aires City, Argentina
| | - P Stjärne
- Section of Rhinology, Department of Otorhinolaryngology, Karolinska University Hospital and Karolinska Institutet, Stockholm, Sweden
| | - B A Stuck
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Essen, University Duisburg-Essen, Germany
| | - J Vodicka
- Department of Otorhinolaryngology and Head and Neck Surgery, Hospital Pardubice, Faculty of Health Studies, University of Pardubice, Pardubice, Czech Republic
| | - A Welge-Luessen
- University Hospital Basel - Otorhinolaryngology, Basel, Switzerland
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Küllmer J, Damm M, Schäffer A, Merk T. Lymphozytäre interstitielle Pneumonie bei Erstdiagnose einer rheumatoiden Arthritis. Pneumologie 2017. [DOI: 10.1055/s-0037-1598524] [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]
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Burchard K, Damm M, Küllmer J, Schäffer A, Merk T. Asymptomatische Aspiration einer Videoendoskopie-Kapsel und Bergung mit dem Roth Netz. Pneumologie 2017. [DOI: 10.1055/s-0037-1598344] [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)
| | | | | | | | - T Merk
- Sektion Pneumologie, Klinikum Ludwigsburg
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Damm M, Schäffer A, Küllmer J, Merk T. Adulter Morbus Still bei einem Patienten mit idiopathischer Lungenfibrose – eine Koinzidienz? Pneumologie 2017. [DOI: 10.1055/s-0037-1598525] [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]
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Merk T, Küllmer J, Damm M. Abtragung eines Trachea-Tumors mit der Colon-Polypektomieschlinge. Pneumologie 2017. [DOI: 10.1055/s-0037-1598352] [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)
- T Merk
- Sektion Pneumologie, Klinikum Ludwigsburg
| | - J Küllmer
- Sektion Pneumologie, Klinikum Ludwigsburg
| | - M Damm
- Sektion Pneumologie, Klinikum Ludwigsburg
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Shmygalev S, Damm M, Knels L, Strassburg A, Wünsche K, Dumke R, Stehr SN, Koch T, Heller AR. IgM-enriched solution BT086 improves host defense capacity and energy store preservation in a rabbit model of endotoxemia. Acta Anaesthesiol Scand 2016; 60:502-12. [PMID: 26555358 PMCID: PMC5063102 DOI: 10.1111/aas.12652] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2015] [Revised: 07/14/2015] [Accepted: 09/09/2015] [Indexed: 12/26/2022]
Abstract
Introduction The therapeutic value of intravenous immunoglobulin (IVIG) as an adjuvant therapy in sepsis remains debatable. We hypothesized that intravenous administration of BT086, a predominantly IgM IVIG solution, would improve host defense in an established rabbit model of endotoxemia and systemic sepsis. Methods New Zealand white rabbits were randomized into the following four groups: (1) the negative control group without lipopolysaccharide (LPS, control), (2) the positive control group with LPS infusion (LPS group), (3) the albumin‐treated LPS group (ALB+LPS group), and (4) the BT086‐treated LPS group (BT086 + LPS group). A standardized amount of E. coli was intravenously injected into all of the animals. The vital parameters, the concentration of E. coli in the blood and other organs, the residual granulocyte phagocytosis activity, and the levels of the inflammatory mediators were measured. Histological changes in the lung and liver tissue were examined following autopsy. Results The elimination of E. coli from the bloodstream was expedited in the BT086‐treated group compared with the LPS‐ and albumin‐treated groups. The BT086 + LPS group exhibited higher phagocytic activity of polymorphonuclear neutrophils (PMNs) than the control and ALB+LPS groups. The liver energy stores were higher in the BT086 + LPS group than in the other groups. Conclusion Our data suggest that the IgM‐enriched IVIG has the potential to improve host defense in a rabbit model of endotoxemia. Studies using different animal models and dosages are necessary to further explore the potential benefits of IgM‐enriched IVIG solutions.
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Affiliation(s)
- S. Shmygalev
- Department of Anaesthesiology and Intensive Care Medicine University Hospital Carl Gustav Carus Dresden Technische Universität DresdenDresden Germany
| | - M. Damm
- Department of Anaesthesiology and Intensive Care Medicine University Hospital Carl Gustav Carus Dresden Technische Universität DresdenDresden Germany
| | - L. Knels
- Institute of Anatomy Medical Faculty Carl Gustav Carus Technische Universität Dresden Dresden Germany
| | - A. Strassburg
- Medical Faculty Carl Gustav Carus Technische Universität Dresden Dresden Germany
| | - K. Wünsche
- Medical Faculty Carl Gustav Carus Technische Universität Dresden Dresden Germany
| | - R. Dumke
- Institute of Medical Microbiology and Hygiene Medical Faculty Carl Gustav Carus Technische Universität Dresden Dresden Germany
| | - S. N. Stehr
- Department of Anaesthesiology and Intensive Care Medicine University Medical char Schleswig‐Holstein Lübeck Germany
| | - T. Koch
- Department of Anaesthesiology and Intensive Care Medicine University Hospital Carl Gustav Carus Dresden Technische Universität DresdenDresden Germany
| | - A. R. Heller
- Department of Anaesthesiology and Intensive Care Medicine University Hospital Carl Gustav Carus Dresden Technische Universität DresdenDresden Germany
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Merk T, Büttner S, Damm M, Landerer J, Klöpfer D, Riecken B. Pulmonale Residuen nach erfolgreicher Behandlung einer Infektion mit Bacille Calmette-Guérin. Pneumologie 2016. [DOI: 10.1055/s-0036-1572221] [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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Landerer J, Damm M, Caca K, Zimmermann K, Merk T. Fallbericht: Vom metastasierten Tumor zur isolierten Tuberkulose. Pneumologie 2016. [DOI: 10.1055/s-0036-1572219] [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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Damm M, Landerer J, Platzer L, Merk T, Caca K. Remission mit Rituximab – erfolgreiche Therapie einer Polyangiitis mit Granulomatose bei einem Jugendlichen. Pneumologie 2016. [DOI: 10.1055/s-0036-1572072] [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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Cahyadi O, Damm M, Merk T, Hetzel M. Pulmonale Langerhanszell-Histiozytose als seltene Ursache des chronischen Hustens. Pneumologie 2016. [DOI: 10.1055/s-0036-1572166] [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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Damm M, El-Tawel H, Beller K, Landerer J, Caca K, Merk T. Lymphangiomatose mit Mediastinaltumor, Knochen- und Milzzysten bei einem 38-jährigen Patienten mit Kolonkarzinom – ein Fallbericht. Pneumologie 2016. [DOI: 10.1055/s-0036-1572070] [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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Stuck BA, Beule A, Damm M, Gudziol H, Hüttenbrink KB, Landis BN, Renner B, Sommer JU, Uecker FC, Vent J, Hummel T. [Position paper "Chemosensory testing for expert opinion in smell disorders"]. Laryngorhinootologie 2014; 93:327-9. [PMID: 24782205 DOI: 10.1055/s-0033-1364034] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Providing expert opinion in the context of smell disorders is often challenging, not only with regard to general aspects of providing an expert opinion but particularly with regard to chemosensory testing. Currently there is no consensus which chemosensory test should be selected and how they should be executed. This positions paper from Committee on Olfaction and Gustation of the German Society of Otorhinolaryngology, Head and Neck Surgery aims to give concrete recommendations for chemosensory testing for providing expert opinion for smell disorders with regard to the selection and execution of these test.
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Affiliation(s)
| | - A Beule
- Klinik für Hals-Nasen-Ohrenkrankheiten, Kopf- und Halschirurgie der -Universitätsmedizin Greifswald
| | - M Damm
- Klinik und Poliklinik für Hals-, Nasen- und Ohrenheilkunde Köln
| | - H Gudziol
- Universitäts-HNO-Klinik, Universität Jena
| | - K-B Hüttenbrink
- Klinik und Poliklinik für Hals-, Nasen- und Ohrenheilkunde Köln
| | - B N Landis
- Unité de Rhinologie-Olfactologie, Service d'Oto-Rhino-Laryngologie et de Chirurgie cervico-faciale, Hôpitaux Universitaires de Genève
| | - B Renner
- Institut für Klinische und Experimentelle Pharmakologie und Toxikologie Erlangen
| | | | - F C Uecker
- Klinik und Poliklinik für Hals-, Nasen- und Ohrenheilkunde, Kopf- und -Halschirurgie der Charité - Universitätsmedizin Berlin
| | - J Vent
- Universitäts-HNO-Klinik Mannheim
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Abstract
The demographic change is associated with an increasing number of elderly patients with serious comorbidities. The prevalence of coronary heart disease in particular increases with age and raises the risk of perioperative myocardial ischemia. In the last few years various interventions have been evaluated to lower the perioperative risk for serious cardiovascular events. This includes cardioprotective medical interventions, for example with β-receptor blockers and statins. Current guidelines recommend that patients who are on β-receptor blockers or statins for chronic treatment of cardiovascular diseases should continue this medication throughout the perioperative period. Myocardial conditioning has been assessed to be effective under numerous experimental conditions and clinical trials have also provided evidence for myocardial protection by conditioning. Besides ischemic and anesthetic-induced preconditioning the noninvasive technique of remote preconditioning offers interesting possibilities, especially for patients with serious comorbidities; however, large scale randomized clinical multicentre trials are still needed. Regarding cardioprotective effectiveness, the clinical data for regional anesthesia are very heterogeneous; nevertheless regional anesthesia is very effective in postoperative pain therapy. Therefore regional anesthesia should be used as a part of multimodal therapy concepts to lower the risk of perioperative cardiovascular events.
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Affiliation(s)
- M Damm
- Klinik und Poliklinik für Anästhesiologie und Intensivtherapie, Universitätsklinikum Carl Gustav Carus, Fetscherstrasse 74, Dresden, Germany.
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Abstract
Olfactory dysfunction is a frequent diagnosis. This overview describes recent standards in structural imaging related to olfactory dysfunction, with magnetic resonance imaging being the most significant imaging tool both quantitatively and qualitatively. Relevant MRI-techniques to be applied in patients during routine clinical workup and the consecutive imaging evaluation are presented and discussed.
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Affiliation(s)
- N Abolmaali
- OncoRay - Strahlenforschung in der Onkologie, Molekulare und Biologische Bildgebung, Medizinische Fakultät Carl Gustav Carus, TU Dresden, Dresden, Germany.
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Abstract
Olfactory dysfunction has been reported to affect about 79,000 patients who were treated annually in German ORL-hospitals. The incidence of olfactory dysfunctions emphasizes the need for diagnostic strategies. This article features on the dysfunction of human olfaction including neurodegenerative diseases. Standard procedures for the psychophysical and objective assessment of olfactory function are presented. Current diagnostic imaging techniques for routine use and scientific approaches are discussed.
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Affiliation(s)
- M Damm
- Klinik und Poliklinik für Hals-Nasen- und Ohrenheilkunde am Klinikum der Universität zu Köln.
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Preuss SF, Klussmann JP, Wittekindt C, Damm M, Semrau R, Drebber U, Guntinas-Lichius O. Long-term results of the combined modality therapy for advanced cervical metastatic head and neck squamous cell carcinoma. European Journal of Surgical Oncology (EJSO) 2007; 33:358-63. [PMID: 17157472 DOI: 10.1016/j.ejso.2006.10.043] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2006] [Accepted: 10/27/2006] [Indexed: 11/18/2022]
Abstract
AIM A consensus treatment strategy for advanced cervical metastatic head and neck squamous cell carcinoma has not been established. The aim of this retrospective study was to investigate the outcome of these patients uniformely using a strategy which consists of surgery for the primary tumor and the neck metastases followed by postoperative radio(chemo)therapy. METHODS We included a selected series of 518 patients with previously untreated head and neck squamous cell carcinoma. The overall survival (OS), the disease specific survival (DSS), the disease free survival (DFS), the local control (LC) and regional control (RC) estimates were calculated. The statistical relationship of various clinical and histopathological variables on the above mentioned estimates were analyzed. RESULTS The overall survival probability was 73.2% for pN0 stage, 43% for pN>1 stages and 31% for pN2c/pN3 stages. The pN stage significantly influenced the survival probabilities in oropharyngeal (p=0.0001) and laryngeal tumors (p<0.0001) in univariate analyses. In multivariate analysis, age, pT stage, pN stage, M stage, and extranodal spreading were independent risk factors for decreased disease-specific survival. CONCLUSIONS We could show that pN stage is an important independent prognostic factor in head and neck cancer. The presented multimodal treatment protocol provides excellent oncological outcomes and should therefore be standard of care for patients with operable advanced cervical metastatic head and neck squamous cell carcinoma.
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Affiliation(s)
- S F Preuss
- Department of Otorhinolaryngology, Head and Neck Surgery, Medical School, University of Cologne, Josef Stelzmann Str. 9, 50924 Cologne, Germany.
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Beutner D, Preuss SF, Quante G, Klussmann JP, Damm M, Hüttenbrink KB. [Vallecular cyst as a rare cause of progressive inspiratory stridor]. Laryngorhinootologie 2006; 85:441-3. [PMID: 16770840 DOI: 10.1055/s-2005-870505] [Citation(s) in RCA: 1] [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: 10/24/2022]
Abstract
BACKGROUND Vallecular cysts are frequently observed, benign masses of the upper aerodigestiv tract. Usually they appear as harmless and asymptomatic and go unnoticed by the patient. In rare cases, obstructions of the upper airway due to monstrous vallecular cysts may become life threatening. CASE We report on a 69-year-old otherwise healthy woman with a rapidly progressive history of dyspnea caused by a pedicled vallecular cyst. Increasing stridor prompted emergency surgical resection. CONCLUSION Vallecular cysts that increase in size can cause dyspnea due to obstruction of the aditus of the larynx. This case demonstrates the need for surgical treatment at an early stage of pedicled vallecular cysts.
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Affiliation(s)
- D Beutner
- Klinik und Poliklinik für Hals-, Nasen- und Ohrenkrankheiten der Universität zu Köln, 50924 Köln.
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Konstantinidis I, Haehner A, Frasnelli J, Reden J, Quante G, Damm M, Hummel T. Post-infectious olfactory dysfunction exhibits a seasonal pattern. Rhinology 2006; 44:135-9. [PMID: 16792173] [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: 05/10/2023]
Abstract
HYPOTHESIS We investigated whether olfactory dysfunction following infections of the upper respiratory tract (post-URTI) has an incidence matching the seasonality of URTIs. STUDY DESIGN Retrospective study. METHODS In total, 457 patients (126 male, 331 female) with post-URTI olfactory loss were examined during a 6-year-period (1999-2004). Their records were assessed for age, sex, and time of onset of the disease. The severity of olfactory dysfunction was assessed using the "Sniffin' Sticks" (odour threshold, odour discrimination, and odour identification). RESULTS Incidence of post-URTI olfactory dysfunction exhibited seasonal fluctuations with deviations from the winter seasonality of URTIs. The overall incidence of the disease differed significantly between months. March (12.7%) and May (12.6%) were the months with the highest incidence of the disease throughout the year. The lowest incidence was observed in September (5.6%). Significant differences were found between these months and months with a high incidence of URTIs. DISCUSSION The peak incidence of post-URTI olfactory loss in March may be explained by the high incidence of influenza at this time. However, it is unclear why the incidence of the disease presents a second peak in May, when the incidence of respiratory viruses is relatively low. Climate conditions at this time might play a role in the susceptibility of the nasal epithelia towards certain viral infections, e.g. parainfluenza type III. CONCLUSION Post-URTI olfactory dysfunction exhibits spring seasonality with peaks in March and May and possible causative factors being influenza and parainfluenza viruses (type III), respectively.
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Affiliation(s)
- I Konstantinidis
- Smell & Taste Clinic, Department of Otorhinolaryngology, University of Dresden Medical School Technische Universität Dresden, Dresden, Germany
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Damm M. Idiopathische Rhinitis - CME-Fragen. Laryngorhinootologie 2006. [DOI: 10.1055/s-2006-925442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Affiliation(s)
- G Quante
- Klinik und Poliklinik für Hals-, Nasen-, Ohren-Heilkunde, Kopf- und Hals-Chirurgie, Universitätsklinikum Köln.
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Irngartinger M, Camuglia V, Damm M, Goede J, Frijlink HW. Pulmonary delivery of therapeutic peptides via dry powder inhalation: effects of micronisation and manufacturing. Eur J Pharm Biopharm 2005; 58:7-14. [PMID: 15207532 DOI: 10.1016/j.ejpb.2004.03.016] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2003] [Revised: 09/30/2003] [Accepted: 03/17/2004] [Indexed: 11/26/2022]
Abstract
Pulmonary drug delivery is increasingly appreciated as a route of administration for systemically acting proteins and peptides. A respirable particle size of the drug is a key requirement, but the fragile nature of many proteins may be a limitation for the application of conventional production processes. The aim of this study was to examine the effect of different micronisation processes on the degradation and aerodynamic properties of the GnRH-antagonist cetrorelix in order to enable its application by a dry powder inhaler (Novolizer). A modified pearl mill was used for milling in fluid propellant. Furthermore, a spray drying procedure was established using a novel process of atomisation and drying. Adhesive mixtures of lactose and 5-20% of micronised cetrorelix-acetate were prepared. Analysis by laser light scattering, HPLC, Karl Fischer, cascade impactor and scanning electron microscopy were performed to characterise the manufactured powders. Both micronisation procedures succeeded in producing small range particle size distributions, suitable for deep lung deposition (D50 = 1.6 microm for milling and 3.3 microm for spray drying). The pearl milled cetrorelix showed promising results when delivered by the Novolizer: a reproducible and highly efficient dispersion of the drug was achieved (around 60% of aerosolised drug < 5 microm). The spray dried drug was not suitable when processed as adhesive mixture.
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Abstract
The present manuscript is the result of a collaborative effort within the framework of the Working Group of Olfactology and Gustology of the German Society for ENT, Head and Neck Surgery. It provides a comprehensive overview about the current views on the epidemiology, terminology, diagnostics, and therapy of olfactory dysfunction, and aims to offer a framework for the standardized procedures for the diagnosis and therapy of olfactory disorders.
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Affiliation(s)
- G Förster
- Universitäts-HNO-Klinik der Friedrich-Schiller-Universität Jena.
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Jurk T, Damm M, Vent J, Hummel T. Korrelation zwischen peripherem Riechvermögen und Ausprägung des Sulcus olfactorius. Laryngorhinootologie 2004. [DOI: 10.1055/s-2004-823482] [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: 10/19/2022]
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Damm M, Rosenbohm J, Quante G, Sauer JA. Staphylokkoken-Enterotoxin-A führt zu einer proinflammatorischen Antwort von nasalen Epithelzellen in vitro. Laryngorhinootologie 2004. [DOI: 10.1055/s-2004-823661] [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: 10/19/2022]
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Sauer JA, Quante G, Jurk T, Damm M. Thymus-Stroma-Lymphopoetin (TSL) Genexpression bei der chronisch-hyperplastischen Rhinosinusitis. Laryngorhinootologie 2004. [DOI: 10.1055/s-2004-823685] [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: 10/19/2022]
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Quante G, Guntinas-Lichius O, Sauer JA, Damm M. Urbach-Wiethe-Syndom (Lipoidproteinose) mit gingivaler und laryngealer Manifestation. Eine Kasuistik. Laryngorhinootologie 2004. [DOI: 10.1055/s-2004-823376] [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: 10/19/2022]
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Abstract
INTRODUCTION Olfactory dysfunction has been reported to affect more than 200,000 patients a year in the USA. The aim of this survey was to obtain comparable epidemiological data and treatment information on olfactory dysfunction in German speaking countries. METHODS Questionnaires were sent to all otorhinolaryngology departments in Germany, Austria and Switzerland; 52% of hospitals completed the survey. RESULTS An average of 46 patients with olfactory dysfunction were treated per hospital every month. Hyp- and anosmia were most commonly caused by inflammatory diseases of the nose/paranasal sinuses (53%), respiratory dysfunction (19%), or postviral conditions (11%). Steroids were used most frequently for pharmacological treatment (topically 82%; orally 65%). Approximately one third of the clinics used B vitamins, or zinc; 80% of the hospitals performed surgery to treat underlying diseases. Acupuncture and smell training was used by approximately 20%. CONCLUSION A total of 79,000 patients per year are treated for olfactory dysfunction in German hospitals. The vast majority of these disorders (72%) is caused by sinunasal diseases. The quality control of therapeutic strategies is urgently needed.
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Affiliation(s)
- M Damm
- Hals-Nasen-Ohren-Klinik, Universität zu Köln, Köln.
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Damm M, Deckert F, Hippler H, Troe J. Isomerization and collisional deactivation of highly vibrationally excited azulene molecules after UV excitation at 248 and 193 nm. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100158a022] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Lizio R, Damm M, Sarlikiotis AW, Bauer HH, Lehr CM. Low-temperature micronization of a peptide drug in fluid propellant: case study cetrorelix. AAPS PharmSciTech 2001; 2:E12. [PMID: 14727871 DOI: 10.1208/pt020312] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Aim of this study was to elaborate an efficient method for the micronization of the decapeptide cetrorelix (a GnRH-antagonist), in order to obtain a microsuspension as basis for other pharmaceutical preparations, such as e.g. inhalation aerosols. A modified pearl-mill coupled with a cryostat was used for the micronization of cetrorelix in fluid propellant and operated under different conditions. The obtained cetrorelix suspensions were analyzed for particle size distribution, purity of cetrorelix, and for metal contamination through abrasion from parts of the mill. The method allowed an effective micronization of cetrorelix. The mean particle size of the initial cetrorelix lyophilizate bulk ware was reduced from 52.5 microm (Volume Mean Diameter, VMD) down to 14.9, 6.1 and 3.1 microm, respectively, respectively. The HPLC analysis of all cetrorelix suspensions after micronization did not show signs of decomposition as compared to the initial product. The elementary analysis of the suspensions performed by inductively coupled plasma mass spectrometry revealed a negligible amount of contaminants in the suspension (Zr = max. 0.6 ppm; Fe, Cr, Ni, Ba, below limit of quantification, i.e. < 0.14 ppm). The only appreciable contaminant, Aluminum (Al = 1.1 ppm), was derived from the mechanical capping of aluminum canisters prior to analysis. The Zr determination in the suspension of 0.6 ppm, is still considered to be negligible as compared to the legally tolerated limit of air contamination. By low-temperature micronization in fluid propellant, fine drug suspensions of cetrorelix for pMDIs can be directly manufactured in one-step procedure without destruction of the peptide structure and without appreciable product contamination.
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Affiliation(s)
- R Lizio
- Department of Biopharmaceutics and Pharmaceutical Technology, Saarland University, 66123 Saarbrücken, Germany.
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Eckel HE, Staar S, Volling P, Sittel C, Damm M, Jungehuelsing M. Surgical treatment for hypopharynx carcinoma: feasibility, mortality, and results. Otolaryngol Head Neck Surg 2001; 124:561-9. [PMID: 11337663 DOI: 10.1067/mhn.2001.115060] [Citation(s) in RCA: 86] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
This study seeks to evaluate treatment modalities, mortality after surgery, survival, and local control rates for a consecutive cohort of patients with cancer of the hypopharynx treated according to a prospective protocol that favors surgery as an initial approach to the disease. The charts of 228 consecutive patients with previously untreated hypopharyngeal squamous cell carcinoma were reviewed. Outcome measures (overall survival, disease specific survival, and local control) were calculated using the Kaplan-Meier estimator. Of 228 consecutive patients, 136 (59.6%) were found suitable for initial surgical treatment. Of the remaining 92 patients, 18 (7.9%) had nonresectable lymph node metastases, 16 (7.0%) had unresectable primary tumors, 13 (5.7%) refused surgery, and 13 (5.7%) presented distant metastases during initial diagnostic evaluation. Of those who had surgery, 46 had larynx-sparing procedures, 54 had total laryngectomy, and 36 had total laryngo-pharyngectomy. None of the patients who had surgery died postoperatively. Actuarial 5-year overall survival was 27.2% for all 228 patients, 39.5% for the 136 patients with surgical treatment, and 61.1% for the 46 patients who were treated with larynx-sparing procedures.
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Affiliation(s)
- H E Eckel
- Department of Otorhinolaryngology-Head and Neck Surgery, University of Cologne, Germany.
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