228 results on '"Wagner, Katrin"'
Search Results
2. Lap. Nissen fundoplication leads to better respiratory symptom control than Toupet in the long term of 20 years
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Gehwolf, Philipp, Agerer, Teresa, Stacul, Nadine, Kienzl-Wagner, Katrin, Schäfer, Aline, Berchtold, Valeria, Cakar-Beck, Fergül, Elisabeth, Gasser, and Wykypiel, Heinz
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- 2023
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3. Linear or circular: Anastomotic ulcer after gastric bypass surgery
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Schäfer, Aline, Gehwolf, Philipp, Kienzl-Wagner, Katrin, Cakar-Beck, Fergül, and Wykypiel, Heinz
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- 2022
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4. Pediatric kidney transplantation in Europe, a clinical snapshot pilot.
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Oomen, Loes, Bootsma-Robroeks, Charlotte M. H. H. T., Bouts, Antonia H. M., Carbonell Pradas, Mar, Gander, Romy, Kienzl-Wagner, Katrin, König, Paul, Pereira, Pedro Lopez, Dunand, Olivier, Mosca, Sara M. F. S., Pac, Michal, Podracka, Ludmila, Prytula, Agnieszka A., Sangermano, Maria, Vitkevic, Renata, Zieg, Jakub, van der Zanden, Loes F. M., Feitz, Wout F. J., and de Wall, Liesbeth L.
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- 2024
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5. Acquired demyelination but not genetic developmental defects in myelination leads to brain tissue stiffness changes
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Eberle, Dominic, Fodelianaki, Georgia, Kurth, Thomas, Jagielska, Anna, Möllmert, Stephanie, Ulbricht, Elke, Wagner, Katrin, Taubenberger, Anna V., Träber, Nicole, Escolano, Joan-Carles, Van Vliet, Krystyn J., and Guck, Jochen
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- 2020
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6. Model-based optimization of public charging infrastructure planning in rural areas
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Niels, Tanja, Gerstenberger, Marcus, Bogenberger, Klaus, Hessel, Christoph, Gigl, Andrea, and Wagner, Katrin
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- 2019
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7. Good Long-term Results Following Simultaneous Pancreas-kidney Transplantation in a 69-y-old Recipient: A Case Report
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Bösmüller, Claudia, Krendl, Felix, Messner, Franka, Berchtold, Valeria, Kienzl-Wagner, Katrin, Scheidl, Stefan, Oberhuber, Rupert, Öfner, Dietmar, Schneeberger, Stefan, and Margreiter, Christian
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- 2021
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8. Laparoscopic Adjustable Gastric Banding: an Underestimated Risk Factor for the Development of Esophageal Cancer?—a Nationwide Survey
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Gehwolf, Philipp, Kienzl-Wagner, Katrin, Cakar-Beck, Fergül, Schäfer, Aline, and Wykypiel, Heinz
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- 2019
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9. Sicherheitspositionen. Zur Perzeption und Diskussion von Sicherheitsmaßnahmen am Flughafen
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Bonß, Wolfgang, Wagner, Katrin, Fischer, Susanne, editor, and Masala, Carlo, editor
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- 2016
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10. Lap. Nissen Fundoplication leads to better respiratory Symptom Control than Toupet in the long-term of 20 years
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Gehwolf, Philipp, primary, Agerer, Teresa, additional, Stacul, Nadine, additional, Kienzl-Wagner, Katrin, additional, Schäfer, Aline, additional, Berchtold, Valeria, additional, Cakar-Beck, Fergül, additional, Elisabeth, Gasser, additional, and Wykypiel, Heinz, additional
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- 2023
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11. Functional leaf traits of vascular epiphytes : vertical trends within the forest, intra- and interspecific trait variability, and taxonomic signals
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Petter, Gunnar, Wagner, Katrin, Wanek, Wolfgang, Delgado, Eduardo Javier Sánchez, Zotz, Gerhard, Cabral, Juliano Sarmento, and Kreft, Holger
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- 2016
12. The role of the regeneration niche for the vertical stratification of vascular epiphytes
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Wagner, Katrin, Bogusch, Wiebke, and Zotz, Gerhard
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- 2013
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13. Putting vascular epiphytes on the traits map
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Hietz, Peter; https://orcid.org/0000-0002-0458-6593, Wagner, Katrin; https://orcid.org/0000-0003-4326-1086, Nunes Ramos, Flavio; https://orcid.org/0000-0001-6689-3575, Cabral, Juliano Sarmento; https://orcid.org/0000-0002-0116-220X, et al, Kessler, Michael; https://orcid.org/0000-0003-4612-9937, Hietz, Peter; https://orcid.org/0000-0002-0458-6593, Wagner, Katrin; https://orcid.org/0000-0003-4326-1086, Nunes Ramos, Flavio; https://orcid.org/0000-0001-6689-3575, Cabral, Juliano Sarmento; https://orcid.org/0000-0002-0116-220X, et al, and Kessler, Michael; https://orcid.org/0000-0003-4612-9937
- Abstract
1. Plant functional traits impact the fitness and environmental niche of plants. Major plant functional types have been characterized by their trait spectrum, and the environmental and phylogenetic imprints on traits have advanced several ecological fields. Yet, very few trait data on epiphytes, which represent almost 10% of vascular plants, are available. 2. We collated 76,561 trait observations for 2,882 species of vascular epiphytes and compared these to non-epiphytic herbs and trees to test hypotheses related to how the epiphytic habit affects traits, and if epiphytes occupy a distinct region in the global trait space. We also compared variation in traits among major groups of epiphytes, and investigated the coordination of traits in epiphytes, ground-rooted herbs and trees. 3. Epiphytes differ from ground-rooted plants mainly in traits related to water relations. Unexpectedly, we did not find lower leaf nutrient concentrations, except for nitrogen. Mean photosynthetic rates are much lower than in ground-rooted plants and lower than expected from the nitrogen concentrations. Trait syndromes clearly distinguish epiphytes from trees and from most non-epiphytic herbs. 4. Among the three largest epiphytic taxa, orchids differ from bromeliads and ferns mainly by having smaller and more numerous stomata, while ferns differ from bromeliads by having thinner leaves, higher nutrient concentrations, and lower water content and water use efficiency. 5. Trait networks differ among epiphytes, herbs and trees. While all have central nodes represented by SLA and mass-based photosynthesis, in epiphytes, traits related to plant water relations have stronger connections, and nutrients other than potassium have weaker connections to the remainder of the trait network. Whereas stem-specific density reflects mechanical support related to plant size in herbs and trees, in epiphytes it mostly reflects water storage and scales with leaf water content. 6. Synthesis. Our findings advance
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- 2022
14. Renal and circulatory effects of large volume plasma expansion in patients with hepatorenal syndrome type 1
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Umgelter, Andreas, Wagner, Katrin S., Reindl, Wolfgang, Luppa, Peter B., Geisler, Fabian, Huber, Wolfgang, and Schmid, Roland M.
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- 2012
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15. Strategien gegen die Unsicherheit. Europäische Sicherheitsmaßnahmen nach 9/11
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Bug, Mathias, Enskat, Sebastian, Fischer, Susanne, Klüfers, Philipp, Röllgen, Jasmin, and Wagner, Katrin
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- 2011
16. Putting vascular epiphytes on the traits map
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Hietz, Peter, Wagner, Katrin, Nunes Ramos, Flavio, Cabral, Juliano Sarmento, et al, Kessler, Michael, and University of Zurich
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10121 Department of Systematic and Evolutionary Botany ,Ecology ,Behavior and Systematics ,Evolution ,Plant Science ,580 Plants (Botany) ,10211 Zurich-Basel Plant Science Center - Published
- 2022
17. Putting vascular epiphytes on the traits map
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Hietz, Peter, primary, Wagner, Katrin, additional, Nunes Ramos, Flavio, additional, Cabral, Juliano Sarmento, additional, Agudelo, Claudia, additional, Benavides, Ana María, additional, Cach‐Pérez, Manuel Jesús, additional, Cardelús, Catherine L., additional, Chilpa Galván, Nahlleli, additional, Erickson Nascimento da Costa, Lucas, additional, Paula Oliveira, Rodolfo, additional, Einzmann, Helena J. R., additional, Paiva Farias, Rafael, additional, Guzmán Jacob, Valeria, additional, Kattge, Jens, additional, Kessler, Michael, additional, Kirby, Catherine, additional, Kreft, Holger, additional, Krömer, Thorsten, additional, Males, Jamie, additional, Monsalve Correa, Samuel, additional, Moreno‐Chacón, Maria, additional, Petter, Gunnar, additional, Reyes‐García, Casandra, additional, Saldaña, Alfredo, additional, Schellenberger Costa, David, additional, Taylor, Amanda, additional, Velázquez Rosas, Noé, additional, Wanek, Wolfgang, additional, Woods, Carrie L., additional, and Zotz, Gerhard, additional
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- 2021
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18. The role of lipocalin-2 in liver regeneration
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Kienzl-Wagner, Katrin, Moschen, Alexander R., Geiger, Sabine, Bichler, Alexandra, Aigner, Felix, Brandacher, Gerald, Pratschke, Johann, and Tilg, Herbert
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- 2015
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19. Proteomics in Transplantation
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Kienzl-Wagner, Katrin, primary and Brandacher, Gerald, additional
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- 2014
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20. Linear or circular: Anastomotic ulcer after gastric bypass surgery
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Schäfer, Aline, primary, Gehwolf, Philipp, additional, Kienzl-Wagner, Katrin, additional, Cakar-Beck, Fergül, additional, and Wykypiel, Heinz, additional
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- 2021
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21. Barrierefreiheit in Echtzeit.
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Wagner, Katrin and Schulz, Tim
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- 2024
22. Functional Traits of a Rainforest Vascular Epiphyte Community: Trait Covariation and Indications for Host Specificity
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Wagner, Katrin, Wanek, Wolfgang, and Zotz, Gerhard
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host preference ,lcsh:Biology (General) ,leaf carbon isotope ratio ,root tissue density ,specific root length ,leaf nitrogen concentration ,leaf thickness ,leaf nitrogen isotope ratio ,root nutrient concentration ,lcsh:QH301-705.5 ,leaf dry matter content ,specific leaf area - Abstract
Trait matching between interacting species may foster diversity. Thus, high epiphyte diversity in tropical forests may be partly due to the high diversity of trees and some degree of host specificity. However, possible trait matching between epiphyte and host is basically unexplored. Since the epiphytic habitat poses particular challenges to plants, their trait correlations should differ from terrestrial plants, but to what extent is unclear as epiphytes are underrepresented or missing in the large trait databases. We quantified 28 traits of 99 species of vascular epiphytes in a lowland forest in Panama that were related to plant size, leaf, stem, and root morphology, photosynthetic mode, and nutrient concentrations. We analyzed trait covariation, community weighted means, and functional diversity for assemblages on stems and in crowns of four tree species. We found intriguing differences between epiphytes and terrestrial plants regarding trait covariation in trait relations between plant maximal height, stem specific density, specific root length, and root tissue den-sity, i.e., stem and root economic spectra. Regarding host specificity, we found strong evidence for environmental filtering of epiphyte traits, but only in tree crowns. On stems, community weighted means differed in only one case, whereas >, 2/3 of all traits differed in tree crowns. Although we were only partly able to interpret these differences in the light of tree trait differences, these findings mark an important step towards a functional understanding of epiphyte host specificity.
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- 2021
23. RDMO4Life und Fachrepositorium Lebenswissenschaften im Projekt 'Emissionsminderung Nutztierhaltung' EmiMin
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Lindstädt, Birte and Wagner, Katrin
- Abstract
E-Science-Tage 2019
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- 2020
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24. EpIG‐DB: A database of vascular epiphyte assemblages in the Neotropics
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Mendieta-Leiva, Glenda, Ramos, Flavio N., Elias, João P. C., Zotz, Gerhard, Acuña-Tarazona, Margoth, Alvim, Francine Seehaber, Barbosa, Daniel E. F., Basílio, Geicilaine A., Batke, Sven P., Benavides, Ana María, Blum, Christopher T., Boelter, Carlos R., Brancalion, Pedro H. S., Carmona, María Judith, Carvalho, Luciana P., De La Rosa-Manzano, Edilia, Einzmann, Helena J. R., Fernández, Manuel, Furtado, Samyra G., Gasper, André L., Guzmán-Jacob, Valeria, Hietz, Peter, Irume, Mariana V., Jiménez-López, Derio Antonio, Kessler, Michael, Kreft, Holger, Krömer, Thorsten, Machado, Giesta Maria O., Martínez-Meléndez, Nayely, Martins, Pedro Luiz S. S., Mello, Rodrigo De Macêdo, Mendes, Alex F., Menini Neto, Luiz, Mortara, Sara R., Nardy, Camila, Oliveira, Rodolfo De Paula, A. Pereira, Ana Clara, Pillaca, Luis, Quaresma, Adriano C., Rodríguez Quiel, Calixto, Soto Medina, Edier, Taylor, Amanda, Vega, Michael S., Wagner, Katrin, Werneck, Márcio S., Werner, Florian A., Wolf, Jan H. D., Zartman, Charles E., Zuleta, Daniel, Jiménez-Alfaro, Borja, and Pärtel, Meelis
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Geography & travel ,ddc:910 - Published
- 2020
25. TRY plant trait database – enhanced coverage and open access
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Kattge, Jens, Bönisch, Gerhard, Díaz, Sandra, Lavorel, Sandra, Prentice, Iain Colin, Leadley, Paul, Tautenhahn, Susanne, Werner, Gijsbert D. A., Aakala, Tuomas, Abedi, Mehdi, Acosta, Alicia T. R., Adamidis, George C., Adamson, Kairi, Aiba, Masahiro, Albert, Cécile H., Alcántara, Julio M., Alcázar C, Carolina, Aleixo, Izabela, Ali, Hamada, Amiaud, Bernard, Ammer, Christian, Amoroso, Mariano M., Anand, Madhur, Anderson, Carolyn, Anten, Niels, Antos, Joseph, Apgaua, Deborah Mattos Guimarães, Ashman, Tia-Lynn, Asmara, Degi Harja, Asner, Gregory P., Aspinwall, Michael, Atkin, Owen, Aubin, Isabelle, Baastrup-Spohr, Lars, Bahalkeh, Khadijeh, Bahn, Michael, Baker, Timothy, Baker, William J., Bakker, Jan P., Baldocchi, Dennis, Baltzer, Jennifer, Banerjee, Arindam, Baranger, Anne, Barlow, Jos, Barneche, Diego R., Baruch, Zdravko, Bastianelli, Denis, Battles, John, Bauerle, William, Bauters, Marijn, Bazzato, Erika, Beckmann, Michael, Beeckman, Hans, Beierkuhnlein, Carl, Bekker, Renee, Belfry, Gavin, Belluau, Michael, Beloiu, Mirela, Benavides, Raquel, Benomar, Lahcen, Berdugo-Lattke, Mary Lee, Berenguer, Erika, Bergamin, Rodrigo, Bergmann, Joana, Bergmann Carlucci, Marcos, Berner, Logan, Bernhardt-Römermann, Markus, Bigler, Christof, Bjorkman, Anne D., Blackman, Chris, Blanco, Carolina, Blonder, Benjamin, Blumenthal, Dana, Bocanegra-González, Kelly T., Boeckx, Pascal, Bohlman, Stephanie, Böhning-Gaese, Katrin, Boisvert-Marsh, Laura, Bond, William, Bond-Lamberty, Ben, Boom, Arnoud, Boonman, Coline C. F., Bordin, Kauane, Boughton, Elizabeth H., Boukili, Vanessa, Bowman, David M. J. S., Bravo, Sandra, Brendel, Marco Richard, Broadley, Martin R., Brown, Kerry A., Bruelheide, Helge, Brumnich, Federico, Bruun, Hans Henrik, Bruy, David, Buchanan, Serra W., Bucher, Solveig Franziska, Buchmann, Nina, Buitenwerf, Robert, Bunker, Daniel E., Bürger, Jana, Burrascano, Sabina, Burslem, David F. R. P., Butterfield, Bradley J., Byun, Chaeho, Marques, Marcia, Scalon, Marina C., Caccianiga, Marco, Cadotte, Marc, Cailleret, Maxime, Camac, James, Camarero, Jesús Julio, Campany, Courtney, Campetella, Giandiego, Campos, Juan Antonio, Cano-Arboleda, Laura, Canullo, Roberto, Carbognani, Michele, Carvalho, Fabio, Casanoves, Fernando, Castagneyrol, Bastien, Catford, Jane A., Cavender-Bares, Jeannine, Cerabolini, Bruno E. L., Cervellini, Marco, Chacón-Madrigal, Eduardo, Chapin, Kenneth, Chapin, F. Stuart, Chelli, Stefano, Chen, Si-Chong, Chen, Anping, Cherubini, Paolo, Chianucci, Francesco, Choat, Brendan, Chung, Kyong-Sook, Chytrý, Milan, Ciccarelli, Daniela, Coll, Lluís, Collins, Courtney G., Conti, Luisa, Coomes, David, Cornelissen, Johannes H. C., Cornwell, William K., Corona, Piermaria, Coyea, Marie, Craine, Joseph, Craven, Dylan, Cromsigt, Joris P. G. M., Csecserits, Anikó, Cufar, Katarina, Cuntz, Matthias, da Silva, Ana Carolina, Dahlin, Kyla M., Dainese, Matteo, Dalke, Igor, Dalle Fratte, Michele, Dang-Le, Anh Tuan, Danihelka, Jirí, Dannoura, Masako, Dawson, Samantha, de Beer, Arend Jacobus, De Frutos, Angel, De Long, Jonathan R., Dechant, Benjamin, Delagrange, Sylvain, Delpierre, Nicolas, Derroire, Géraldine, Dias, Arildo S., Diaz-Toribio, Milton Hugo, Dimitrakopoulos, Panayiotis G., Dobrowolski, Mark, Doktor, Daniel, Dřevojan, Pavel, Dong, Ning, Dransfield, John, Dressler, Stefan, Duarte, Leandro, Ducouret, Emilie, Dullinger, Stefan, Durka, Walter, Duursma, Remko, Dymova, Olga, E-Vojtkó, Anna, Eckstein, Rolf Lutz, Ejtehadi, Hamid, Elser, James, Emilio, Thaise, Engemann, Kristine, Erfanian, Mohammad Bagher, Erfmeier, Alexandra, Esquivel-Muelbert, Adriane, Esser, Gerd, Estiarte, Marc, Domingues, Tomas F., Fagan, William F., Fagúndez, Jaime, Falster, Daniel S., Fang, Jingyun, Farris, Emmanuele, Fazlioglu, Fatih, Feng, Yanhao, Fernandez-Mendez, Fernando, Ferrara, Carlotta, Ferreira, Joice, Fidelis, Alessandra, Finegan, Bryan, Firn, Jennifer, Flowers, Timothy J., Flynn, Dan F. B., Fontana, Veronika, Forey, Estelle, Forgiarini, Cristiane, François, Louis, Frangipani, Marcelo, Frank, Dorothea, Frenette-Dussault, Cedric, Freschet, Grégoire T., Fry, Ellen L., Fyllas, Nikolaos M., Mazzochini, Guilherme G., Gachet, Sophie, Gallagher, Rachael, Ganade, Gislene, Ganga, Francesca, García-Palacios, Pablo, Gargaglione, Verónica, Garnier, Eric, Garrido, Jose Luis, de Gasper, André Luís, Gea-Izquierdo, Guillermo, Gibson, David, Gillison, Andrew N., Giroldo, Aelton, Glasenhardt, Mary-Claire, Gleason, Sean, Gliesch, Mariana, Goldberg, Emma, Göldel, Bastian, Gonzalez-Akre, Erika, Gonzalez-Andujar, Jose L., González-Melo, Andrés, González-Robles, Ana, Graae, Bente Jessen, Granda, Elena, Graves, Sarah, Green, Walton A., Gregor, Thomas, Gross, Nicolas, Guerin, Greg R., Günther, Angela, Gutiérrez, Alvaro G., Haddock, Lillie, Haines, Anna, Hall, Jefferson, Hambuckers, Alain, Han, Wenxuan, Harrison, Sandy P., Hattingh, Wesley, Hawes, Joseph E., He, Tianhua, He, Pengcheng, Heberling, Jacob Mason, Helm, Aveliina, Hempel, Stefan, Hentschel, Jörn, Hérault, Bruno, Hereş, Ana-Maria, Herz, Katharina, Heuertz, Myriam, Hickler, Thomas, Hietz, Peter, Higuchi, Pedro, Hipp, Andrew L., Hirons, Andrew, Hock, Maria, Hogan, James Aaron, Holl, Karen, Honnay, Olivier, Hornstein, Daniel, Hou, Enqing, Hough-Snee, Nate, Hovstad, Knut Anders, Ichie, Tomoaki, Igić, Boris, Illa, Estela, Isaac, Marney, Ishihara, Masae, Ivanov, Leonid, Ivanova, Larissa, Iversen, Colleen M., Izquierdo, Jordi, Jackson, Robert B., Jackson, Benjamin, Jactel, Hervé, Jagodzinski, Andrzej M., Jandt, Ute, Jansen, Steven, Jenkins, Thomas, Jentsch, Anke, Jespersen, Jens Rasmus Plantener, Jiang, Guo-Feng, Johansen, Jesper Liengaard, Johnson, David, Jokela, Eric J., Joly, Carlos Alfredo, Jordan, Gregory J., Joseph, Grant Stuart, Junaedi, Decky, Junker, Robert R., Justes, Eric, Kabzems, Richard, Kane, Jeffrey, Kaplan, Zdenek, Kattenborn, Teja, Kavelenova, Lyudmila, Kearsley, Elizabeth, Kempel, Anne, Kenzo, Tanaka, Kerkhoff, Andrew, Khalil, Mohammed I., Kinlock, Nicole L., Kissling, Wilm Daniel, Kitajima, Kaoru, Kitzberger, Thomas, Kjøller, Rasmus, Klein, Tamir, Kleyer, Michael, Klimešová, Jitka, Klipel, Joice, Kloeppel, Brian, Klotz, Stefan, Knops, Johannes M. H., Kohyama, Takashi, Koike, Fumito, Kollmann, Johannes, Komac, Benjamin, Komatsu, Kimberly, König, Christian, Kraft, Nathan J. B., Kramer, Koen, Kreft, Holger, Kühn, Ingolf, Kumarathunge, Dushan, Kuppler, Jonas, Kurokawa, Hiroko, Kurosawa, Yoko, Kuyah, Shem, Laclau, Jean-Paul, Lafleur, Benoit, Lallai, Erik, Lamb, Eric, Lamprecht, Andrea, Larkin, Daniel J., Laughlin, Daniel, Le Bagousse-Pinguet, Yoann, le Maire, Guerric, le Roux, Peter C., le Roux, Elizabeth, Lee, Tali, Lens, Frederic, Lewis, Simon L., Lhotsky, Barbara, Li, Yuanzhi, Li, Xine, Lichstein, Jeremy W., Liebergesell, Mario, Lim, Jun Ying, Lin, Yan-Shih, Linares, Juan Carlos, Liu, Chunjiang, Liu, Daijun, Liu, Udayangani, Livingstone, Stuart, Llusià, Joan, Lohbeck, Madelon, López-García, Álvaro, Lopez-Gonzalez, Gabriela, Lososová, Zdeňka, Louault, Frédérique, Lukács, Balázs A., Lukeš, Petr, Luo, Yunjian, Lussu, Michele, Ma, Siyan, Maciel Rabelo Pereira, Camilla, Mack, Michelle, Maire, Vincent, Mäkelä, Annikki, Mäkinen, Harri, Malhado, Ana Claudia Mendes, Mallik, Azim, Manning, Peter, Manzoni, Stefano, Marchetti, Zuleica, Marchino, Luca, Marcilio-Silva, Vinicius, Marcon, Eric, Marignani, Michela, Markesteijn, Lars, Martin, Adam, Martínez-Garza, Cristina, Martínez-Vilalta, Jordi, Mašková, Tereza, Mason, Kelly, Mason, Norman, Massad, Tara Joy, Masse, Jacynthe, Mayrose, Itay, McCarthy, James, McCormack, M. Luke, McCulloh, Katherine, McFadden, Ian R., McGill, Brian J., McPartland, Mara Y., Medeiros, Juliana S., Medlyn, Belinda, Meerts, Pierre, Mehrabi, Zia, Meir, Patrick, Melo, Felipe P. L., Mencuccini, Maurizio, Meredieu, Céline, Messier, Julie, Mészáros, Ilona, Metsaranta, Juha, Michaletz, Sean T., Michelaki, Chrysanthi, Migalina, Svetlana, Milla, Ruben, Miller, Jesse E. D., Minden, Vanessa, Ming, Ray, Mokany, Karel, Moles, Angela T., Molnár V, Attila, Molofsky, Jane, Molz, Martin, Montgomery, Rebecca A., Monty, Arnaud, Moravcová, Lenka, Moreno-Martínez, Alvaro, Moretti, Marco, Mori, Akira S., Mori, Shigeta, Morris, Dave, Morrison, Jane, Mucina, Ladislav, Mueller, Sandra, Muir, Christopher D., Müller, Sandra Cristina, Munoz, François, Myers-Smith, Isla H., Myster, Randall W., Nagano, Masahiro, Naidu, Shawna, Narayanan, Ayyappan, Natesan, Balachandran, Negoita, Luka, Nelson, Andrew S., Neuschulz, Eike Lena, Ni, Jian, Niedrist, Georg, Nieto, Jhon, Niinemets, Ülo, Nolan, Rachael, Nottebrock, Henning, Nouvellon, Yann, Novakovskiy, Alexander, Network, The Nutrient, Nystuen, Kristin Odden, O'Grady, Anthony, O'Hara, Kevin, O'Reilly-Nugent, Andrew, Oakley, Simon, Oberhuber, Walter, Ohtsuka, Toshiyuki, Oliveira, Ricardo, Öllerer, Kinga, Olson, Mark E., Onipchenko, Vladimir, Onoda, Yusuke, Onstein, Renske E., Ordonez, Jenny C., Osada, Noriyuki, Ostonen, Ivika, Ottaviani, Gianluigi, Otto, Sarah, Overbeck, Gerhard E., Ozinga, Wim A., Pahl, Anna T., Paine, C. E. Timothy, Pakeman, Robin J., Papageorgiou, Aristotelis C., Parfionova, Evgeniya, Pärtel, Meelis, Patacca, Marco, Paula, Susana, Paule, Juraj, Pauli, Harald, Pausas, Juli G., Peco, Begoña, Penuelas, Josep, Perea, Antonio, Peri, Pablo Luis, Petisco-Souza, Ana Carolina, Petraglia, Alessandro, Petritan, Any Mary, Phillips, Oliver L., Pierce, Simon, Pillar, Valério D., Pisek, Jan, Pomogaybin, Alexandr, Poorter, Hendrik, Portsmuth, Angelika, Poschlod, Peter, Potvin, Catherine, Pounds, Devon, Powell, A. Shafer, Power, Sally A., Prinzing, Andreas, Puglielli, Giacomo, Pyšek, Petr, Raevel, Valerie, Rammig, Anja, Ransijn, Johannes, Ray, Courtenay A., Reich, Peter B., Reichstein, Markus, Reid, Douglas E. B., Réjou-Méchain, Maxime, de Dios, Victor Resco, Ribeiro, Sabina, Richardson, Sarah, Riibak, Kersti, Rillig, Matthias C., Riviera, Fiamma, Robert, Elisabeth M. 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- Abstract
Plant traits-the morphological, anatomical, physiological, biochemical and phenological characteristics of plants-determine how plants respond to environmental factors, affect other trophic levels, and influence ecosystem properties and their benefits and detriments to people. Plant trait data thus represent the basis for a vast area of research spanning from evolutionary biology, community and functional ecology, to biodiversity conservation, ecosystem and landscape management, restoration, biogeography and earth system modelling. Since its foundation in 2007, the TRY database of plant traits has grown continuously. It now provides unprecedented data coverage under an open access data policy and is the main plant trait database used by the research community worldwide. Increasingly, the TRY database also supports new frontiers of trait-based plant research, including the identification of data gaps and the subsequent mobilization or measurement of new data. To support this development, in this article we evaluate the extent of the trait data compiled in TRY and analyse emerging patterns of data coverage and representativeness. Best species coverage is achieved for categorical traits-almost complete coverage for 'plant growth form'. However, most traits relevant for ecology and vegetation modelling are characterized by continuous intraspecific variation and trait-environmental relationships. These traits have to be measured on individual plants in their respective environment. Despite unprecedented data coverage, we observe a humbling lack of completeness and representativeness of these continuous traits in many aspects. We, therefore, conclude that reducing data gaps and biases in the TRY database remains a key challenge and requires a coordinated approach to data mobilization and trait measurements. This can only be achieved in collaboration with other initiatives.
- Published
- 2020
26. EpIG‐DB: A database of vascular epiphyte assemblages in the Neotropics
- Author
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Mendieta‐Leiva, Glenda, Ramos, Flavio N., Elias, João P.C., Zotz, Gerhard, Acuña‐Tarazona, Margoth, Alvim, Francine Seehaber, Barbosa, Daniel E.F., Basílio, Geicilaine A., BATKE, SVEN, Benavides, Ana María, Blum, Christopher T., Boelter, Carlos R., Brancalion, Pedro H.S., Carmona, María Judith, Carvalho, Luciana P., de la Rosa‐Manzano, Edilia, Einzmann, Helena J.R., Fernández, Manuel, Furtado, Samyra G., de Gasper, André L., Guzmán‐Jacob, Valeria, Hietz, Peter, Irume, Mariana V., Jiménez‐López, Derio Antonio, Kessler , Michael, Kreft , Holger, Krömer, Thorsten, Machado, Giesta Maria O., Martínez‐Meléndez, Nayely, Nardy, Camila, de Paula Oliveira, Rodolfo, Pereira, Ana Clara A., Pillaca, Luis, Quaresma, Adriano C., Quiel, Calixto Rodríguez, Medina, Edier Soto, Taylor, Amanda, Vega, Michael S., Wagner, Katrin, Werneck, Márcio S., Werner, Florian A., Wolf, Jan H.D., Zartman, Charles E., Zuleta, Daniel, Jímenez‐Alfaro, Borja, Mendieta‐Leiva, Glenda, Ramos, Flavio N., Elias, João P.C., Zotz, Gerhard, Acuña‐Tarazona, Margoth, Alvim, Francine Seehaber, Barbosa, Daniel E.F., Basílio, Geicilaine A., BATKE, SVEN, Benavides, Ana María, Blum, Christopher T., Boelter, Carlos R., Brancalion, Pedro H.S., Carmona, María Judith, Carvalho, Luciana P., de la Rosa‐Manzano, Edilia, Einzmann, Helena J.R., Fernández, Manuel, Furtado, Samyra G., de Gasper, André L., Guzmán‐Jacob, Valeria, Hietz, Peter, Irume, Mariana V., Jiménez‐López, Derio Antonio, Kessler , Michael, Kreft , Holger, Krömer, Thorsten, Machado, Giesta Maria O., Martínez‐Meléndez, Nayely, Nardy, Camila, de Paula Oliveira, Rodolfo, Pereira, Ana Clara A., Pillaca, Luis, Quaresma, Adriano C., Quiel, Calixto Rodríguez, Medina, Edier Soto, Taylor, Amanda, Vega, Michael S., Wagner, Katrin, Werneck, Márcio S., Werner, Florian A., Wolf, Jan H.D., Zartman, Charles E., Zuleta, Daniel, and Jímenez‐Alfaro, Borja
- Abstract
Vascular epiphytes are a diverse and conspicuous component of biodiversity in tropical and subtropical forests. Yet, the patterns and drivers of epiphyte assemblages are poorly studied in comparison with soil-rooted plants. Current knowledge about diversity patterns of epiphytes mainly stems from local studies or floristic inventories, but this information has not yet been integrated to allow a better understanding of large-scale distribution patterns. EpIG-DB, the first database on epiphyte assemblages at the continental scale, resulted from an exhaustive compilation of published and unpublished inventory data from the Neotropics. The current version of EpIG-DB consists of 463,196 individual epiphytes from 3,005 species, which were collected from a total of 18,148 relevés (host trees and ‘understory’ plots). EpIG-DB reports the occurrence of ‘true’ epiphytes, hemiepiphytes and nomadic vines, including information on their cover, abundance, frequency and biomass. Most records (97%) correspond to sampled host trees, 76% of them aggregated in forest plots. The data is stored in a TURBOVEG database using the most up-to-date checklist of vascular epiphytes. A total of 18 additional fields were created for the standardization of associated data commonly used in epiphyte ecology (e.g. by considering different sampling methods). EpIG-DB currently covers six major biomes across the whole latitudinal range of epiphytes in the Neotropics but welcomes data globally. This novel database provides, for the first time, unique biodiversity data on epiphytes for the Neotropics and unified guidelines for future collection of epiphyte data. EpIG-DB will allow exploration of new ways to study the community ecology and biogeography of vascular epiphytes.
- Published
- 2020
27. Functional Traits of a Rainforest Vascular Epiphyte Community: Trait Covariation and Indications for Host Specificity
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Wagner, Katrin, primary, Wanek, Wolfgang, additional, and Zotz, Gerhard, additional
- Published
- 2021
- Full Text
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28. Transforming growth factor-β1 primes proliferating adult neural progenitor cells to electrophysiological functionality
- Author
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Kraus, Sabrina, Lehner, Bernadette, Reichhart, Nadine, Couillard-Despres, Sebastien, Wagner, Katrin, Bogdahn, Ulrich, Aigner, Ludwig, and Strau, Olaf
- Published
- 2013
- Full Text
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29. Nighttime procedures are not associated with adverse outcomes in kidney transplantation
- Author
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Kienzl-Wagner, Katrin, Schneiderbauer, Stefanie, Bösmüller, Claudia, Schneeberger, Stefan, Pratschke, Johann, and Öllinger, Robert
- Published
- 2013
- Full Text
- View/download PDF
30. Single-center experience with third and fourth kidney transplants
- Author
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Kienzl-Wagner, Katrin, Mark, Walter, Maglione, Manuel, Brandacher, Gerald, Öllinger, Robert, Margreiter, Raimund, Pratschke, Johann, and Bösmüller, Claudia
- Published
- 2011
- Full Text
- View/download PDF
31. Arterial Hypertension as a Risk Factor for Reduced Glomerular Filtration Rate after Living Kidney Donation
- Author
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Kerschbaum, Julia, primary, Bitter, Stefanie, additional, Weitlaner, Maria, additional, Kienzl-Wagner, Katrin, additional, Neuwirt, Hannes, additional, Bösmüller, Claudia, additional, Mayer, Gert, additional, Schneeberger, Stefan, additional, and Rudnicki, Michael, additional
- Published
- 2020
- Full Text
- View/download PDF
32. Including dynamics in the equation: Tree growth rates and host specificity of vascular epiphytes
- Author
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Wagner, Katrin, primary and Zotz, Gerhard, additional
- Published
- 2019
- Full Text
- View/download PDF
33. Impact Assessment of Land-Use Change and Agricultural Treatments on Greenhouse Gas Emissions from Wetlands of Uganda and Tanzania
- Author
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Wagner, Katrin Xin Xin
- Abstract
Wetlands play an important role in global climate regulation as they represent a great global carbon sink. Moreover, wetlands provide optimal conditions for food production and support the livelihoods of many people in Sub-Saharan Africa with food supply. The conversion of natural wetland areas to farmland seriously affects valuable ecosystem services, including global climate regulation, and can result in altered greenhouse gas(GHG) emissions. Therefore, a main challenge of sustainable wetland management is to find a reconciliation between food production and mitigation of GHG emissions. For the development of management recommendations, GHG emission data from wetlands in Sub-Saharan Africa are highly needed, because the numbers of GHG studies conducted in this region are low. This study aimed to reduce this knowledge gap and assessed GHG emissions from wetlands in East Africa with consideration of contrasting wetland types, different types of land use and different hydrological positions within the wetland. Moreover, different agricultural treatments were evaluated with respect to their effects on yield-based GHG emissions. Two field experiments were established in different wetland types in East Africa. The first test site was located in an inland valley wetland in Uganda,while the second one was located in a floodplain of the Kilombero river in Tanzania. CH$_{4}$,CO$_{2}$ and N$_{2}$O emission data were collected with static chambers for a total samplingperiod of two consecutive cropping and fallow periods. During data analysis, a lack of systematic quality assurance of GHG data from static chamber measurements became apparent. Thus, an eight-step data quality management system based on objective criteria was developed to ensure data reliability and improve data acceptance rates. The quality-checked results of this study confirmed that land-use change had a significant impact on GHG emissions, as the global warming potential (GWP) considerably increasedafter the conversion of natural wetlands to farmland. Moreover, this study showed that intensification of food production did not result in significantly higher yield-based GHG emissions. Intensive cropping treatments with fertilizer application showed equally high or even lower global warming potential indexes (GWPI) compared to non-fertilized treatments. In conclusion, intensive cropping management practices with high yield potentials represent a possible trade-off between food production and GHG emissions. However, to achieve GHG emission mitigation, a combination with natural wetland areas spared from agricultural production is essential.
- Published
- 2019
34. Cryoglobulinaemic vasculitis: classification and clinical and therapeutic aspects
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Braun, Gerald S, Horster, Sophia, Wagner, Katrin S, Ihrler, Stephan, and Schmid, Holger
- Published
- 2007
35. Impairment and Recovery of Elementary Cognitive Function Induced by Hypoglycemia in Type-1 Diabetic Patients and Healthy Controls
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Lobmann, Ralf, Smid, Henderikus G. O. M, Pottag, Gesine, Wagner, Katrin, Heinze, Hans-Joachim, and Lehnert, Hendrik
- Published
- 2000
36. Compliant 3D Hydrogel Bead Scaffolds to Study Cell Migration and Mechanosensitivity in vitro
- Author
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Wagner, Katrin, Bley, Thomas, Guck, Jochen, Bühler, Katja, and Technische Universität Dresden
- Subjects
ddc:621.3 ,hydrogel, microgel, 3D scaffold, cell migration, mechanosensitivity ,ddc:620 - Abstract
Gewebe sind nicht nur durch ihre biochemische Zusammensetzung definiert, sondern auch durch ihre individuellen mechanischen Eigenschaften. Inzwischen ist es weithin akzeptiert, dass Zellen ihre mechanische Umgebung spüren und darauf reagieren. Zum Beispiel werden Zellmigration und die Differenzierung von Stammzellen durch die Umgebungssteifigkeit beeinflusst. Um diese Effekte in vitro zu untersuchen, wurden viele Zellkulturstudien auf 2D Hydrogelsubstraten durchgeführt. Zusätzlich dazu steigt die Anzahl von Studien an, die hydrogelbasierte 3D-Scaffolds nutzen, um 2D Studien zu validieren und die experimentellen Bedingungen der Situation in vivo anzunähern. Jedoch erweist es sich weiterhin als schwierig den Effekt von Mechanik in 3D in vitro zu untersuchen, da in den gemeinhin genutzten 3D Hydrogelsystemen immer eine Kopplung zwischen Gelporosität und Steifigkeit besteht. Zusätzlich hängt die Konzentration der biologisch aktiven Bindungsstellen für Zellen oft ebenfalls von der Steifigkeit ab. Diese Arbeit präsentiert die Entwicklung und Optimierung neuer 3D Hydrogelkugel-Scaffolds, in denen die Steifigkeit von der Porosität schließlich entkoppelt wird. Mit Hydrogelkugeln als Scaffold-Bausteine ist es nun möglich 3D Scaffolds mit definierten mechanischen Eigenschaften und konstanter Porengröße zu generieren. Während der Methodenentwicklung wurden verschiedene Prinzipien und Kultivierungskammern konstruiert und überarbeitet, gefolgt von der theoretischen Betrachtung der Sauerstoffdiffusion, um die Eignung der gewählten Kammer hinsichtlich Zellvitalität und Zellwachstum zu überprüfen. Eine Kombination aus mehreren getesteten Filtern wurde ausgewählt um HydrogelkugelScaffolds erfolgreich in der ausgewählten Kammer zu generieren. Im Weiteren wurden verschiedene Hydrogelmaterialien untersucht hinsichtlich der erfolgreichen Produktion monodisperser Hydrogelkugeln und der Erzeugung stabiler Scaffolds. Hydrogelkugeln aus Polyacrylamid (PAAm) wurden als Scaffold-Bausteine ausgewählt um damit die Eignung des entwickelten Systems zu demonstrieren lebende Zellen zu mikroskopieren. Außerdem wurde das Überleben von Fibroblasten über vier Tage in unterschiedlich steifen HydrogelkugelScaffolds erfolgreich gezeigt. Weiterhin war es möglich erste Zellmigrationsexperimente durchzuführen. Dafür wurden sowohl einfache PAAm-Hydrogelkugeln als auch mit Adhäsionsmolekülen funktionalisierte Hydrogelkugeln genutzt, um unterschiedlich steife Schichten in einem Scaffold zu erzeugen. Dadurch war es möglich nicht nur Zellmigration anhand von Zelladhäsion in 3D Scaffolds mit Steifigkeitsgradienten zu beobachten, sondern auch Zellmigration ohne Zelladhäsion.:1 Introduction 1.1 Mechanics play a role in biology 1.2 3D cultures and scaffolds 1.3 3D hydrogel systems to study effects of mechanics 1.4 Decoupling stiffness and porosity in 3D scaffolds 2 Materials 3 Methods 3.1 Laser scanning microscopy and microscopy data processing 3.2 Atomic force microscopy (AFM) 3.3 Refractive index matching of PMMA beads 3.4 Regular PMMA bead scaffolds for developing analysis algorithm 3.5 Cell culture standards 3.6 Fluorescent labelling of ULGP agarose 3.7 Production of polydisperse ULGP agarose beads 3.8 Hydrogel bead production via microfluidics 3.9 PAAm bead functionalization 3.10 Real-time fluorescence and deformability cytometry (RT-fDC) 3.11 3D scaffolds made from hydrogel beads 3.12 Statistics 4 Results 4.1 Design of a suitable scaffold device 4.2 Theoretical oxygen supply in 3D culture system is sufficient for cell survival and proliferation 4.3 Further optimization of 3D scaffold device 4.3.1 PMMA beads can be arranged in stable scaffolds 4.3.2 Regular PMMA bead scaffolds can be achieved and analysed 4.3.3 PMMA bead scaffolds and agarose bead scaffolds act as combined filter to stack up hydrogel beads 4.4 PAAm hydrogel beads produced by microfluidics are suitable to create compliant 3D scaffolds 4.5 Reproducible, regular and stable 3D scaffolds made of hydrogel beads 4.6 NIH-3T3/GFP cell migration within 3D hydrogel bead scaffolds 5 Discussion and Concluding Remarks 6 Bibliography List of Figures List of Tables Eigenständigkeitserklärung Appendix A Appendix B FIJI macro for FFT analysis maxima Python script to determine regularity of PMMA bead scaffolds Excel macro to determine number of peaks for regularity analysis Tissues are defined not only by their biochemical composition, but also by their distinct mechanical properties. It is now widely accepted that cells sense their mechanical environment and respond to it. For example, cell migration and stem cell differentiation is affected by stiffness. To study these effects in vitro, many cell culture studies have been performed on 2D hydrogel substrates. Additionally, the amount of 3D studies based on hydrogels as 3D scaffold is increasing to validate 2D in vitro studies and adjust experimental conditions closer to the situation in vivo. However, studying the effects of mechanics in vitro in 3D is still challenging as commonly used 3D hydrogel assays always link gel porosity with stiffness. Additionally, the concentration of biologically active adhesion sides often also depends on the stiffness. This work presents the development and optimization of novel 3D hydrogel bead scaffolds where the stiffness is finally decoupled from porosity. With hydrogel beads as scaffold building blocks it was possible to generate 3D scaffolds with defined mechanical properties and a constant pore size. During the method development, different culture devices were constructed and revised, followed by oxygen diffusion simulations to proof the suitability of the chosen device for cell survival and growth. A combination of different filter approaches was selected to generate hydrogel bead scaffolds in the culture device. Furthermore, different hydrogel materials were investigated regarding successful production of monodisperse beads and stable scaffold generation. Polyacrylamide (PAAm) hydrogel beads were chosen as scaffold building blocks to demonstrate live-cell imaging and successful cell survival over four days in differently compliant hydrogel bead scaffolds. Moreover, first cell migration experiments were performed by using plain PAAm hydrogel beads as well as PAAm hydrogel beads functionalized with adhesion molecules with differently stiff layers in one scaffold. Thereby fibroblast migration was observed not only in adhesion-dependent migration manner, but also in an adhesion-independent mode .:1 Introduction 1.1 Mechanics play a role in biology 1.2 3D cultures and scaffolds 1.3 3D hydrogel systems to study effects of mechanics 1.4 Decoupling stiffness and porosity in 3D scaffolds 2 Materials 3 Methods 3.1 Laser scanning microscopy and microscopy data processing 3.2 Atomic force microscopy (AFM) 3.3 Refractive index matching of PMMA beads 3.4 Regular PMMA bead scaffolds for developing analysis algorithm 3.5 Cell culture standards 3.6 Fluorescent labelling of ULGP agarose 3.7 Production of polydisperse ULGP agarose beads 3.8 Hydrogel bead production via microfluidics 3.9 PAAm bead functionalization 3.10 Real-time fluorescence and deformability cytometry (RT-fDC) 3.11 3D scaffolds made from hydrogel beads 3.12 Statistics 4 Results 4.1 Design of a suitable scaffold device 4.2 Theoretical oxygen supply in 3D culture system is sufficient for cell survival and proliferation 4.3 Further optimization of 3D scaffold device 4.3.1 PMMA beads can be arranged in stable scaffolds 4.3.2 Regular PMMA bead scaffolds can be achieved and analysed 4.3.3 PMMA bead scaffolds and agarose bead scaffolds act as combined filter to stack up hydrogel beads 4.4 PAAm hydrogel beads produced by microfluidics are suitable to create compliant 3D scaffolds 4.5 Reproducible, regular and stable 3D scaffolds made of hydrogel beads 4.6 NIH-3T3/GFP cell migration within 3D hydrogel bead scaffolds 5 Discussion and Concluding Remarks 6 Bibliography List of Figures List of Tables Eigenständigkeitserklärung Appendix A Appendix B FIJI macro for FFT analysis maxima Python script to determine regularity of PMMA bead scaffolds Excel macro to determine number of peaks for regularity analysis
- Published
- 2018
37. Hydrogels: 3D Microenvironment Stiffness Regulates Tumor Spheroid Growth and Mechanics via p21 and ROCK (Adv. Biosys. 9/2019)
- Author
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Taubenberger, Anna V., primary, Girardo, Salvatore, additional, Träber, Nicole, additional, Fischer‐Friedrich, Elisabeth, additional, Kräter, Martin, additional, Wagner, Katrin, additional, Kurth, Thomas, additional, Richter, Isabel, additional, Haller, Barbara, additional, Binner, Marcus, additional, Hahn, Dominik, additional, Freudenberg, Uwe, additional, Werner, Carsten, additional, and Guck, Jochen, additional
- Published
- 2019
- Full Text
- View/download PDF
38. 3D Microenvironment Stiffness Regulates Tumor Spheroid Growth and Mechanics via p21 and ROCK
- Author
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Taubenberger, Anna V., primary, Girardo, Salvatore, additional, Träber, Nicole, additional, Fischer‐Friedrich, Elisabeth, additional, Kräter, Martin, additional, Wagner, Katrin, additional, Kurth, Thomas, additional, Richter, Isabel, additional, Haller, Barbara, additional, Binner, Marcus, additional, Hahn, Dominik, additional, Freudenberg, Uwe, additional, Werner, Carsten, additional, and Guck, Jochen, additional
- Published
- 2019
- Full Text
- View/download PDF
39. Disease Recurrence—The Sword of Damocles in Kidney Transplantation for Primary Focal Segmental Glomerulosclerosis
- Author
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Kienzl-Wagner, Katrin, primary, Waldegger, Siegfried, additional, and Schneeberger, Stefan, additional
- Published
- 2019
- Full Text
- View/download PDF
40. Colloidal crystals of compliant microgel beads to study cell migration and mechanosensitivity in 3D
- Author
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Wagner, Katrin, primary, Girardo, Salvatore, additional, Goswami, Ruchi, additional, Rosso, Gonzalo, additional, Ulbricht, Elke, additional, Müller, Paul, additional, Soteriou, Despina, additional, Träber, Nicole, additional, and Guck, Jochen, additional
- Published
- 2019
- Full Text
- View/download PDF
41. Haemodynamic effects of plasma-expansion with hyperoncotic albumin in cirrhotic patients with renal failure: a prospective interventional study
- Author
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Huber Wolfgang, Nurtsch Nils, Reindl Wolfgang, Wagner Katrin, Umgelter Andreas, and Schmid Roland M
- Subjects
Diseases of the digestive system. Gastroenterology ,RC799-869 - Abstract
Abstract Background Patients with advanced cirrhosis of the liver typically display circulatory disturbance. Haemodynamic management may be critical for avoiding and treating functional renal failure in such patients. This study investigated the effects of plasma expansion with hyperoncotic albumin solution and the role of static haemodynamic parameters in predicting volume responsiveness in patients with advanced cirrhosis. Methods Patients with advanced cirrhosis (Child B and C) of the liver receiving albumin substitution because of renal compromise were studied using trans-pulmonary thermodilution. Paired measurements before and after two infusions of 200 ml of 20% albumin per patient were recorded and standard haemodynamic parameters such as central venous pressure (CVP), mean arterial pressure (MAP), systemic vascular resistance index (SVRI), cardiac index (CI) and derived variables were assessed, including global end-diastolic blood volume index (GEDVI), a parameter that reflects central blood volume Results 100 measurements in 50 patients (33 m/17 w; age 56 years (± 8); Child-Pugh-score 12 (± 2), serum creatinine 256 μmol (± 150) were analyzed. Baseline values suggested decreased central blood volumes GEDVI = 675 ml/m2 (± 138) despite CVP within the normal range (11 mmHg (± 5). After infusion, GEDVI, CI and CVP increased (682 ml/m2 (± 128) vs. 744 ml/m2 (± 171), p < 0.001; 4.3 L/min/m2 (± 1.1) vs. 4.7 L/min/m2 (± 1.1), p < 0.001; 12 mmHg (± 6) vs. 14 mmHg (± 6), p < 0.001 respectively) and systemic vascular resistance decreased (1760 dyn s/cm5/m2 (± 1144) vs. 1490 dyn s/cm5/m2 (± 837); p < 0.001). Changes in GEDVI, but not CVP, correlated with changes in CI (r2 = 0.51; p < 0.001). To assess the value of static haemodynamic parameters at baseline in predicting an increase in CI of 10%, receiver-operating-characteristic curves were constructed. The areas under the curve were 0.766 (p < 0.001) for SVRI, 0.723 (p < 0.001) for CI, 0.652 (p = 0.010) for CVP and 0.616 (p = 0.050) for GEDVI. Conclusion In a substantial proportion of patients with advanced cirrhosis, plasma expansion results in an increase in central blood volume. GEDVI but not CVP behaves as an indicator of cardiac preload, whereas high baseline SVRI is predictive of fluid responsiveness.
- Published
- 2008
- Full Text
- View/download PDF
42. Compliant 3D Hydrogel Bead Scaffolds to Study Cell Migration and Mechanosensitivity in vitro
- Author
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Bley, Thomas, Guck, Jochen, Bühler, Katja, Technische Universität Dresden, Wagner, Katrin, Bley, Thomas, Guck, Jochen, Bühler, Katja, Technische Universität Dresden, and Wagner, Katrin
- Abstract
Gewebe sind nicht nur durch ihre biochemische Zusammensetzung definiert, sondern auch durch ihre individuellen mechanischen Eigenschaften. Inzwischen ist es weithin akzeptiert, dass Zellen ihre mechanische Umgebung spüren und darauf reagieren. Zum Beispiel werden Zellmigration und die Differenzierung von Stammzellen durch die Umgebungssteifigkeit beeinflusst. Um diese Effekte in vitro zu untersuchen, wurden viele Zellkulturstudien auf 2D Hydrogelsubstraten durchgeführt. Zusätzlich dazu steigt die Anzahl von Studien an, die hydrogelbasierte 3D-Scaffolds nutzen, um 2D Studien zu validieren und die experimentellen Bedingungen der Situation in vivo anzunähern. Jedoch erweist es sich weiterhin als schwierig den Effekt von Mechanik in 3D in vitro zu untersuchen, da in den gemeinhin genutzten 3D Hydrogelsystemen immer eine Kopplung zwischen Gelporosität und Steifigkeit besteht. Zusätzlich hängt die Konzentration der biologisch aktiven Bindungsstellen für Zellen oft ebenfalls von der Steifigkeit ab. Diese Arbeit präsentiert die Entwicklung und Optimierung neuer 3D Hydrogelkugel-Scaffolds, in denen die Steifigkeit von der Porosität schließlich entkoppelt wird. Mit Hydrogelkugeln als Scaffold-Bausteine ist es nun möglich 3D Scaffolds mit definierten mechanischen Eigenschaften und konstanter Porengröße zu generieren. Während der Methodenentwicklung wurden verschiedene Prinzipien und Kultivierungskammern konstruiert und überarbeitet, gefolgt von der theoretischen Betrachtung der Sauerstoffdiffusion, um die Eignung der gewählten Kammer hinsichtlich Zellvitalität und Zellwachstum zu überprüfen. Eine Kombination aus mehreren getesteten Filtern wurde ausgewählt um HydrogelkugelScaffolds erfolgreich in der ausgewählten Kammer zu generieren. Im Weiteren wurden verschiedene Hydrogelmaterialien untersucht hinsichtlich der erfolgreichen Produktion monodisperser Hydrogelkugeln und der Erzeugung stabiler Scaffolds. Hydrogelkugeln aus Polyacrylamid (PAAm) wurden als Scaffold-Bausteine ausg, Tissues are defined not only by their biochemical composition, but also by their distinct mechanical properties. It is now widely accepted that cells sense their mechanical environment and respond to it. For example, cell migration and stem cell differentiation is affected by stiffness. To study these effects in vitro, many cell culture studies have been performed on 2D hydrogel substrates. Additionally, the amount of 3D studies based on hydrogels as 3D scaffold is increasing to validate 2D in vitro studies and adjust experimental conditions closer to the situation in vivo. However, studying the effects of mechanics in vitro in 3D is still challenging as commonly used 3D hydrogel assays always link gel porosity with stiffness. Additionally, the concentration of biologically active adhesion sides often also depends on the stiffness. This work presents the development and optimization of novel 3D hydrogel bead scaffolds where the stiffness is finally decoupled from porosity. With hydrogel beads as scaffold building blocks it was possible to generate 3D scaffolds with defined mechanical properties and a constant pore size. During the method development, different culture devices were constructed and revised, followed by oxygen diffusion simulations to proof the suitability of the chosen device for cell survival and growth. A combination of different filter approaches was selected to generate hydrogel bead scaffolds in the culture device. Furthermore, different hydrogel materials were investigated regarding successful production of monodisperse beads and stable scaffold generation. Polyacrylamide (PAAm) hydrogel beads were chosen as scaffold building blocks to demonstrate live-cell imaging and successful cell survival over four days in differently compliant hydrogel bead scaffolds. Moreover, first cell migration experiments were performed by using plain PAAm hydrogel beads as well as PAAm hydrogel beads functionalized with adhesion molecules with differently stiff layer
- Published
- 2018
43. Including dynamics in the equation: Tree growth rates and host specificity of vascular epiphytes.
- Author
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Wagner, Katrin, Zotz, Gerhard, and Cao, Kun‐Fang
- Subjects
- *
VASCULAR plants , *TROPICAL forests , *TREE growth , *FOREST canopies , *EPIPHYTES - Abstract
The forest canopy is home to a rich biota. One salient feature are the dynamics of the habitat‐building trees, which are growing and eventually vanishing. Tree species strongly differ in growth rates, final size and longevity. Nevertheless, these inherent dynamics have been a blind spot in studies on host specificity of vascular epiphytes (vascular plants dwelling on trees without parasitizing them)—not least because tree growth rates and longevity are usually unknown in highly diverse tropical forests. The present study aims at tackling this blind spot.We compared epiphyte abundances (>23,000 individuals) found on 285 individuals of four focal tree species in a lowland moist forest in Panama. Data on repeated dbh censuses from a permanent tree plot provided the unique opportunity to estimate the age of our sampled trees. We compared the relative importance of tree longevity for host biases with that of other host tree characteristics, namely microclimatic conditions and bark acidity, rugosity and stability.The studied tree species differ in host quality and epiphyte species partly differ in host preferences. The conclusions concerning relative host tree quality depend hugely on whether or not different tree growth rates are considered. Comparing these conclusions allows important insights into the role of tree longevity in shaping epiphyte communities. Relating tree trait differences to the observed distributions of epiphytes among the focal tree species shows how the simultaneous action of various tree characteristics causes host biases.Synthesis. This study highlights the substantial but, up to now, hidden role of different tree growth rates for host tree specificity of vascular epiphytes. Future investigations need to consider this possibly confounding factor adequately to avoid spurious conclusions. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
44. Laparoscopic Adjustable Gastric Banding: an Underestimated Risk Factor for the Development of Esophageal Cancer?—a Nationwide Survey
- Author
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Gehwolf, Philipp, primary, Kienzl-Wagner, Katrin, additional, Cakar-Beck, Fergül, additional, Schäfer, Aline, additional, and Wykypiel, Heinz, additional
- Published
- 2018
- Full Text
- View/download PDF
45. Successful management of recurrent focal segmental glomerulosclerosis
- Author
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Kienzl-Wagner, Katrin, primary, Rosales, Alejandra, additional, Scheidl, Stefan, additional, Giner, Thomas, additional, Bösmüller, Claudia, additional, Rudnicki, Michael, additional, Oberhuber, Rupert, additional, Margreiter, Christian, additional, Soleiman, Afschin, additional, Öfner, Dietmar, additional, Waldegger, Siegfried, additional, and Schneeberger, Stefan, additional
- Published
- 2018
- Full Text
- View/download PDF
46. Acute but not inherited demyelination in mouse models leads to brain tissue stiffness changes
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Eberle, Dominic, primary, Fodelianaki, Georgia, additional, Kurth, Thomas, additional, Jagielska, Anna, additional, Möllmert, Stephanie, additional, Ulbricht, Elke, additional, Wagner, Katrin, additional, Taubenberger, Anna V., additional, Träber, Nicole, additional, Escolano, Joan-Carles, additional, Franklin, Robin, additional, Van Vliet, Krystyn J., additional, and Guck, Jochen, additional
- Published
- 2018
- Full Text
- View/download PDF
47. PS02.252: LAPOROSCOPIC ADJUSTABLE GASTRIC BANDING: AN UNDERESTIMATED RISK FACTOR FOR THE DEVELOPMENT OF ESOPHAGEAL CANCER?–A NATIONWIDE SURVEY
- Author
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Gehwolf, Philipp, primary, Kienzl-Wagner, Katrin, additional, Cakar-Beck, Fergül, additional, Schäfer, Aline, additional, and Wykypiel, Heinz, additional
- Published
- 2018
- Full Text
- View/download PDF
48. FP730ARTERIAL HYPERTENSION AS A RISK FACTOR FOR RENAL DISEASE IN LIVING KIDNEY DONORS
- Author
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Kerschbaum, Julia, primary, Bitter, Stefanie, additional, Weitlaner, Maria, additional, Kienzl-Wagner, Katrin, additional, Neuwirt, Hannes, additional, Boesmueller, Claudia, additional, Mayer, Gert, additional, Schneeberger, Stefan, additional, and Rudnicki, Michael, additional
- Published
- 2018
- Full Text
- View/download PDF
49. Real-time fluorescence and deformability cytometry
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Rosendahl, Philipp, primary, Plak, Katarzyna, additional, Jacobi, Angela, additional, Kraeter, Martin, additional, Toepfner, Nicole, additional, Otto, Oliver, additional, Herold, Christoph, additional, Winzi, Maria, additional, Herbig, Maik, additional, Ge, Yan, additional, Girardo, Salvatore, additional, Wagner, Katrin, additional, Baum, Buzz, additional, and Guck, Jochen, additional
- Published
- 2018
- Full Text
- View/download PDF
50. Ist Wahn indirekt veränderbar? Ein stimmungsverbesserndes Konzept der kognitive Verhaltenstherapie für die stationäre Standardversorgung von Patienten mit schizophrenen Störungen
- Author
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Lamster, Fabian, primary, Kiener, Jasmin, additional, Wagner, Katrin, additional, Rief, Winfried, additional, Görge, Simone Carina, additional, Iwaniuk, Sarah, additional, Leube, Dirk, additional, Falkenberg, Irina, additional, Kluge, Ina, additional, Kircher, Tilo, additional, and Mehl, Stephanie, additional
- Published
- 2018
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