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4. Vaskuläre Erkrankungen

Author

Berlit, Peter, Klötzsch, C., Röther, J., Grond, M., Rudolf, J., Ringelstein, E. B., Koennecke, H.-C., Kurre, W., Chapot, R., Nahser, H.-C., Stracke, C. P., and Berlit, Peter, editor

Published
2012
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21. Hyaluronic acid cryogels with non-cytotoxic crosslinker genipin

Author

Roether, J., Oelschlaeger, C., and Willenbacher, N.

Subjects
Chemical engineering, ddc:660, lcsh:TA401-492, lcsh:Materials of engineering and construction. Mechanics of materials
Abstract

For the first time, macroporous, elastic, three-dimensional hyaluronic acid cryogels were prepared with genipin as non-cytotoxic crosslinking agent. These cryogels are characterized by a lamellar porous structure with a homogeneous pore size of ~100 µm, shear elasticity of ~2 kPa and a swelling ratio of 2.5 in water. Additionally, multiple particle tracking based microrheology measurements reveal the formation of a heterogeneous network. This novel biomaterial owns great potential as non-cytotoxic alternative for application in drug delivery, as tissue engineering scaffold or wound healing substrate and can help reducing toxicity of artificial skin grafts or tissue equivalents. Keywords: Non-cytotoxic crosslinking, Genipin, Hyaluronic acid, 3D scaffold, Cryogelation

Published
2019

22. Fabrication and characterization of Ag- and Ga-doped mesoporous glass-coated scaffolds based on natural marine sponges with improved mechanical properties

Author

Universidad de Sevilla. Departamento de Ingeniería y Ciencia de los Materiales y del Transporte, Universidad de Sevilla. TEP123: Metalurgia e Ingeniería de los Materiales, Ciraldo, F. E., Arango-Ospina, M., Goldmann, W. H., Beltrán, A.M., Detsch, R., Gruenewald, A., Roether, J. A., Boccaccini, Aldo R., Universidad de Sevilla. Departamento de Ingeniería y Ciencia de los Materiales y del Transporte, Universidad de Sevilla. TEP123: Metalurgia e Ingeniería de los Materiales, Ciraldo, F. E., Arango-Ospina, M., Goldmann, W. H., Beltrán, A.M., Detsch, R., Gruenewald, A., Roether, J. A., and Boccaccini, Aldo R.

Abstract

Natural marine sponges were used as sacrificial template for the fabrication of bioactive glassbased scaffolds. After sintering at 1050 ºC, the resulting samples were additionally coated with a sol silicate solution containing biologically active ions (Ag and Ga), well-known for their antibacterial properties in comparison with standard scaffolds made by PU foam templates. The produced scaffolds were characterized by superior mechanical properties (maximum compressive strength of 4 MPa) and total porosity of ~80%. Direct cell culture tests performed on the uncoated and coated samples showed positive results in terms of adhesion, proliferation, and differentiation of MC3T3-E1 cells. Moreover, vascular endothelial growth factor (VEGF) secretion from cells in contact with scaffold dissolution products was measured after 7 and 10 days of incubation, showing promising angiogenic results for bone tissue engineering applications. The antibacterial potential of the produced samples was assessed by performing agar diffusion tests against both Gram-positive and Gram-negative bacteria.

Published
2020

23. Fabrication and characterization of Ag‐ and Ga‐doped mesoporous glass‐coated scaffolds based on natural marine sponges with improved mechanical properties.

Author

Ciraldo, Francesca E., Arango‐Ospina, Marcela, Goldmann, Wolfgang H., Beltrán, Ana M., Detsch, Rainer, Gruenewald, Alina, Roether, J. A., and Boccaccini, Aldo R.

Abstract

Natural marine sponges were used as sacrificial template for the fabrication of bioactive glass‐based scaffolds. After sintering at 1050°C, the resulting samples were additionally coated with a silicate solution containing biologically active ions (Ag and Ga), well‐known for their antibacterial properties. The produced scaffolds were characterized by superior mechanical properties (maximum compressive strength of 4 MPa) and total porosity of ~80% in comparison to standard scaffolds made by using PU foam templates. Direct cell culture tests performed on the uncoated and coated samples showed positive results in terms of adhesion, proliferation, and differentiation of MC3T3‐E1 cells. Moreover, vascular endothelial growth factor (VEGF) secretion from cells in contact with scaffold dissolution products was measured after 7 and 10 days of incubation, showing promising angiogenic results for bone tissue engineering applications. The antibacterial potential of the produced samples was assessed by performing agar diffusion tests against both Gram‐positive and Gram‐negative bacteria. [ABSTRACT FROM AUTHOR]

Published
2021
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24. Soy protein isolate/bioactive glass composite membranes: Processing and properties

Author

Tansaz, S, Schulte, M, Kneser, U, Mohn, D, Stark, W, Roether, J A, Cicha, I, Boccaccini, A R, University of Zurich, and Tansaz, S

Subjects
Polymers and Plastics, 10066 Clinic of Conservative and Preventive Dentistry, Organic Chemistry, General Physics and Astronomy, 610 Medicine & health, 2507 Polymers and Plastics, 3100 General Physics and Astronomy, 2505 Materials Chemistry, 1605 Organic Chemistry
Published
2018
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25. Identifying higher risk patients among the COMPASS-Eligible population: An analysis from the REduction of Atherothrombosis for Continued Health (REACH) Registry

Author

Darmon, A., primary, Sorbets, E., additional, Ducrocq, G., additional, Elbez, Y., additional, Abtan, J., additional, Popovic, B., additional, Ohman, E.M., additional, Roether, J., additional, Wilson, P.W.F., additional, Montalescot, G., additional, Zeymer, U., additional, Bhatt, D.L., additional, and Steg, P.G., additional

Published
2019
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31. Copper-Releasing, Boron-Containing Bioactive Glass-Based Scaffolds Coated With Alginate For Bone Tissue Engineering

Author

Erol, M. M., Mournio, V., Newby, P., Chatzistavrou, X., Roether, J. A., Hupa, L., and Boccaccini, Aldo R.

Abstract

The aim of this study was to synthesize and characterize new boron-containing bioactive glass-based scaffolds coated with alginate cross-linked with copper ions. A recently developed bioactive glass powder with nominal composition (wt.%) 65 SiO2, 15 CaO, 18.4 Na2O, 0.1 MgO and 1.5 B2O3 was fabricated as porous scaffolds by the foam replica method. Scaffolds were alginate coated by dipping them in alginate solution. Scanning electron microscopy investigations indicated that the alginate effectively attached on the surface of the three-dimensional scaffolds leading to a homogeneous coating. It was confirmed that the scaffold structure remained amorphous after the sintering process and that the alginate coating improved the scaffold bioactivity and mechanical properties. Copper release studies showed that the alginate-coated scaffolds allowed controlled release of copper ions. The novel copper-releasing composite scaffolds represent promising candidates for bone regeneration. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Published
2012

33. Rationale and design of a randomized, double-blind, parallel-group study of terutroban 30 mg/day versus aspirin 100 mg/day in stroke patients: the prevention of cerebrovascular and cardiovascular events of ischemic origin with terutroban in patients with a history of ischemic stroke or transient ischemic attack (PERFORM) study

Author

Bousser, M, Amarenco, P, Chamorro, A, Fisher, M, Ford, I, Fox, K, Hennerici, M, Mattle, H, Rothwell, P, Julian, D, Fieschi, G, Fieschi, C, Boysen, G, Pocock, S, Conard, J, Orgogozo, J, Inzitari, D, Erkinjuntti, T, Pasquier, F, O'Brien, J, Mas, J, Gueret, P, Lenzi, G, Leys, D, Lopez Sendon, J, Norrving, B, Ferro, J, Thygesen, K, Cowpply, B, P, Ameriso, S, Donnan, D, Lang, W, Thijs, V, Fernandes, J, Stamenova, P, Teal, P, Lavados, P, Lu, C, Poljakovic, Z, Kalita, Z, Kaste, M, Moulin, T, Vemmos, K, Diener, H, Wong, L, Nagy, Z, Chopra, J, Mccormack, P, Gensini, G, Budrys, V, Droste, D, Tan, K, Benomar, A, Cantu Brito, C, Barber, A, Koudstaal, P, Thomassen, L, Czlonkowska, A, Cunha, L, Bajenaru, O, Yakhno, N, Chen, C, Lisy, L, Zvan, B, Bryer, A, Kim, J, Vivancos, J, Wahlgren, N, Liu, S, Poungvarin, N, Hentati, F, Bahar, S, Mischenko, T, Lees, K, Abdel Masih, M, Barboza, A, Cirio, J, Crespo, E, Escaray, G, Esnaola, M, Rojas Estol, C, Ferrari, J, Fraiman, H, Garrote, M, Gatto, E, Giannaula, R, Gori, H, Herrera, G, Ioli, P, Losano, J, Povedano Reich, E, Rey, R, Rotta Escalante, R, Saredo, G, Zurru, M, Anderson, C, Bladin, C, Crimmins, D, Davis, S, Donnan, G, Dunbabin, D, Frayne, J, Gates, P, Hankey, G, Helme, R, Herkes, G, Karrasch, J, Kimber, T, Jannes, J, Landau, P, Levi, C, Lueck, C, Markus, R, Phan, T, Schwartz, R, Schultz, D, Blacker, D, Read, S, Williams, M, Aichner, F, Auff, E, Bancher, C, Binder, H, Brainin, M, Brucke, T, Eggers, C, Fertl, E, Ladurner, G, Lalouschek, W, Mamoli, B, Mitrovic, N, Noisternig, G, Schmidt, R, Vosko, M, Willeit, J, Zaruba, E, Boon, P, Bourgeois, P, Caekebeke, J, Cals, N, Cras, P, Desfontaines, P, De Deyn, P, Dieudonne, L, De Klippel, N, Laloux, P, Maertens de Noordhout, A, Merlevede, K, Michotte, A, Pandolfo, M, Peeters, A, Peeters, D, Tack, P, Van Buggenhout, E, Van Landegem, W, Vanhooren, G, Vermylen, P, Annes, M, Brondani, R, De Carvalho, J, Cendes, F, Fabio, S, Ferraz, A, De Freitas, G, Gagliardi, R, Gomes Neto, A, Haussen, S, Kowacs, P, Martins, S, Minelli, C, Moro, C, Noujaim, J, Rocha, M, Da Silva, M, Silveira, J, Yamamoto, F, Zetola, V, Baldaranov, D, Deleva, N, Haralanov, L, Milanov, I, Mintchev, D, Petrova, N, Shotekov, P, Stamenov, B, Zahariev, Z, Arts, R, Bayer, N, Beaudry, M, Berger, L, Bozek, C, Collier, T, Cote, R, Desai, H, Durocher, A, Hachinski, V, Hill, M, Hoppe, B, Howse, D, Mackey, A, Maharaj, M, Minuk, J, Moddel, G, Novak, D, Penn, A, Rabinovitch, H, Selchen, D, Shuaib, A, Silva, J, Silver, F, Spence, D, Stotts, G, Tamayo, A, Teitelbaum, J, Veloso, F, Voll, C, Winder, T, Barrientos Uribe, N, Galdames Poblete, D, Garcia Figueroa, P, Gasic Yaconi, K, Jaramillo Munoz, A, Lavados Germain, P, Lavados Montes, M, Nancupil Bello, C, Prina Pacheco, L, Vargas Canas, A, Venegas, F, Chen, P, H, Cheng, Y, Cui, L, Di, Q, Dong, Q, Fan, D, Feng, H, Huang, Y, Li, J, Li, W, Li, Z, Lin, H, Liu, M, Miao, L, Ren, H, Wang, Y, Wu, J, Zhang, W, Zhao, G, Zhao, H, Zhou, H, Antoncic, I, Demarin, V, Lusic, I, Pavlicek, I, Soldo Butkovic, S, Bar, M, Bauer, J, Kalina, M, Kanovsky, P, Jura, R, Neumann, J, Rektor, I, Skoda, O, Vaclavik, D, Eerola, A, Hillbom, M, Kinnunen, E, Koivisto, K, Numminen, H, Rissanen, A, Roine, R, Sivenius, J, Alamowitch, S, Autret, A, Avendano, S, Bataillard, M, Berthier, E, Besson, G, Bille Turc, F, Boulliat, J, Boulesteix, J, Brosset, C, Cesaro, P, Albucher, J, Clavelou, P, Colamarino, R, Crassard, I, de Broucker, T, de Bray, J, Desbordes, P, Diot, E, Ducrocq, X, Ellie, E, Faucheux, J, Giroud, M, Godefroy, O, Guillon, B, Huttin, H, Just, A, Lamy, C, Lejeune, P, Lucas, C, Macian Montoro, F, Mackowiak, A, Maillet Vioud, M, Pico, F, Milandre, L, Milhaud, D, Malbec, M, Neau, J, Pinel, J, Robin, C, Rodier, G, Rosolacci, T, Rouanet, F, Rouhart, F, Sablot, D, Servan, J, Smadja, D, Trouillas, P, Valance, J, Viader, F, Viallet, F, Wolff, V, Zagnoli, F, Zuber, M, Angerer, M, Becker, U, Berlit, P, Berrouschot, J, Biniek, R, Bitsch, A, Brodhun, R, Dichgans, M, Druschky, K, Dux, R, Faiss, J, Ferbert, A, Gahn, G, Grotemeyer, K, Goertler, M, Grau, A, Griewing, B, Grond, M, Haan, J, Haberl, R, Hamann, G, Hamer, H, Harms, L, Heide, W, Henningsen, H, Hetzel, A, Hoffmann, F, Huber, R, Isenmann, S, Jander, S, Joerg, J, Kaps, M, Kastrup, A, Kessler, C, Koehler, W, Koelmel, H, Lichy, C, Luckner, K, Malessa, R, Mallmann, A, Meyding Lamade, U, Molitor, H, Mueller Jensen, A, Muellges, W, Noth, J, Nueckel, M, Ochs, G, Poppert, H, Roether, J, Rosenkranz, M, Sander, D, Schaebitz, W, Schlachetzki, F, Schlegel, U, Schmid, E, Schneider, D, Schwarz, M, Seidel, G, Sieble, M, Sliwka, U, Stingele, R, Stoegbauer, F, Szabo, K, Topper, R, Treib, J, Weissenborn, K, Widder, B, Witte, O, Karageorgiou, K, Mitsikostas, D, Papadimitriou, A, Papathanasopoulos, P, Chan, H, Ng, P, Tsoi, T, Bartos, L, Csanyi, A, Csiba, L, Csornai, M, Dioszeghy, P, Fazekas, A, Harcos, P, Horvath, S, Kaposzta, Z, Kerenyi, L, Kincses, J, Koves, A, Nikl, J, Panczel, G, Pongracz, E, Sebestyen, K, Semjen, J, Szabo, M, Szegedi, N, Valikovics, A, Varszegi, R, Vecsei, L, Borah, N, Ichaporia, N, Kaul, S, Meenakshi Sundaram, S, Mehndiratta, M, Misra, U, Murthy, J, Nayak, D, Poncha, F, Shah, A, Singh, G, Srinivasa, R, Venkateswarlu, K, Wadia, R, Collins, R, Harbison, J, Hickey, P, Kelly, P, Murphy, S, Adami, A, Agnelli, G, Agostoni, E, Anzola, G, Arnaboldi, M, Bassi, P, Billo, G, Bottacchi, E, Bovi, P, Cappa, S, Cappelletti, C, Carolei, A, Cavallini, A, Chiodo Grandi, F, Comi, G, Consoli, D, Corsi, F, Costanzo, E, De Falco, F, Devetag, F, Di Lazzaro, V, Di Piero, V, Diomedi, M, Fattorello Salimbeni, C, Federico, F, Feleppa, M, Ferrarese, C, Gandolfo, C, Giaccaglini, E, Giaquinto, S, Giobbe, D, Giometto, B, Greco, G, Guidetti, D, Guidotti, M, Iudice, A, Lembo, G, Marengo, C, Marini, P, Melis, M, Micieli, G, Musolino, R, Mutani, R, Neri, G, Parati, E, Pastore, L, Porazzi, D, Prati, P, Procaccianti, G, Rasura, M, Rossini, P, Santilli, I, Semplicini, A, Silvestrini, M, Tanganelli, P, Tedeschi, G, Tezzon, F, Tola, M, Villani, A, Zanferrari, C, Zarcone, D, Bickuviene, I, Gumbrevicius, G, Obelieniene, D, Skaringa, A, Virketiene, I, Tharakan, J, Aleman Pedroza, J, Escamilla Garza, J, Fernandez Vera, J, Leal Cantu, R, Leon Flores, L, Lopez Ruiz, M, Reyes Gutierrez, G, Reyes Morales, S, Rivera Castano, L, Rodrigues Leyva, I, Ruiz Sandoval, J, Vega Boada, F, Belahsen, F, Kissani, N, Mosseddaq, R, Slassi, I, Yahyaoui, M, Boiten, J, Bornebroek, M, De Kort, P, De Leeuw, H, Donders, R, Franke, C, Hertzberger, L, Jansen, B, Kappelle, L, Keizer, K, Kuster, J, Limburg, M, Mulleners, W, Pop, P, Van Den Berg, J, Van Gemert, H, Verbiest, H, Weinstein, H, Clark, M, Fink, J, Gommans, J, Jayathissa, S, Kilfoyle, D, Kumar, A, Hurtig, U, Indredavik, B, Kloster, R, Salvesen, R, Drozdowski, W, Fryze, W, Klimek, A, Kochanowski, J, Kozubski, W, Ksiazkiewicz, B, Kwiecinski, H, Kuczynska Zardzewialy, A, Motta, E, Nowacki, P, Nyka, W, Opala, G, Pierzchala, K, Pniewski, J, Podemski, R, Selmaj, K, Stelmasiak, Z, Stepien, A, Strzelecka Gorzynska, M, Szczudlik, A, Wajgt, A, Wiszniewska, M, Wlodek, A, Canhao, P, Correia, C, Grilo Goncalves, J, Machado Candido, J, Salgado, A, Bulboaca, A, Campeanu, A, Lazar, T, Marginean, I, Minea, D, Pascu, I, Pereanu, M, Perju Dumbrava, L, Popescu, C, Simu, M, Stefanache, F, Toldisan, I, Tuta, S, Zaharia, C, Alifirova, V, Arkhipov, S, Balunov, O, Balyazin, V, Belkin, A, Belova, A, Boiko, A, Bogdanov, E, Butko, D, Chukhlovina, M, Doronin, B, Ermilova, E, Evzelman, M, Fedin, A, Fedorova, N, Golikov, K, Golovkin, V, Gusev, E, Gustov, A, Jakupov, E, Kamchatnov, P, Khabirov, F, Kirienko, A, Klimov, I, Klocheva, E, Kotov, S, Kuznetsov, A, Laskov, V, Levin, Y, Mashkova, N, Nazarov, A, Novikova, L, Odinak, M, Parfenov, V, Pilipenko, P, Pokrovsky, A, Poverennova, I, Rodoman, G, Roshkovskaya, L, Shirokov, E, Shmyriov, V, Sholomov, I, Skoromets, A, Skvortsova, V, Spirin, N, Stakhovskaya, L, Sharov, M, Sherman, M, Shutov, A, Strachunskaya, E, Stulin, I, Suslina, Z, Volosevitch, A, Vorobiev, P, Vorobyeva, O, Voronkova, L, Voskresenskaya, O, Zhuliov, N, Chan, B, Chang, H, Ramani, N, Brozman, M, Dvorak, M, Dzugan, J, Garay, R, Gdovinova, Z, Gurcik, L, Krastev, G, Kukumberg, P, Kurca, E, Meluch, S, Nyeky, M, Turcani, P, Vyletelka, J, Klanjscek, G, Zujovic, E, Zupan, M, Bester, F, Carr, J, Coetzee, C, Frost, A, Gardiner, J, Giampaolo, D, Kesler, S, Lurie, D, Retief, C, Roos, J, Bae, H, Cha, J, Cho, K, Heo, J, Kim, E, Lee, B, Lee, K, Lee, J, Rha, J, Yoon, B, Alvarez Sabin, J, Arboix Damunt, A, De Arce Borda, A, Asensi Alvarez JM, Bermejo Pareja, F, Botia Paniagua, E, Casado, I, Naranjo, I, Castillo Sanchez, J, Chamorro Sanchez, A, Davalos Errando, A, Diaz Marin, C, Diez Tejedor, E, Egido Herrero JA, Fernandez Bolanos, R, Fernandez Fernandez, O, Figuerola Roig, A, Geffner Sclarsky, D, Gil Nunez, A, Gomez Sanchez JC, Gomez Escalonilla Escobar CI, Gonzalez Masegosa, A, Gonzalez Menacho, J, Gracia Fleta, F, Izquierdo Ayuso, G, Jimenez Hernandez, D, Jimenez Martinez, C, Lago Martin, A, Lainez Andres JM, Larracoechea Jausoro, J, Lopez Fernandez JC, Maestre Moreno, J, Marti Vilalta JL, Martin Gonzalez, R, Masjuan Vallejo, J, Medina Rodriguez, A, Molto Jorda JM, Moreno Carre tero MJ, Moris de le Tassa, G, Morlan Gracia, L, Mostacero Miguez, E, Osuna Pulido, T, Pareja Martinez, A, Pinedo Brochado, A, Pons Amate JM, Rodriguez Alvarez JR, Roquer Gonzalez, J, Sanahuja Montesinos, J, Sanchez Sanchez MC, Segura Martin, T, Serena Leal, J, Tejada Garcia, J, Trejo Gabriel JM, Vivancos Mora, J, Andersson, B, Bysell, S, Cederin, B, Laska, A, Lindgren, A, Petersson, T, Wallen, T, Baumgartner, R, Beer, H, Hirt, L, Hungerbuehler, H, Lyrer, P, Michel, P, Mueller, F, Tettenborn, B, Chang, K, Jeng, J, Lien, L, Lin, R, Liu, C, Po, H, Wu, S, Chankrachang, S, Laptikultham, S, Nidhinandana, S, Pongpakdee, S, Benammou, S, Frih Ayed, M, Gouider, R, Mhiri, C, M'Rabet, A, Mrissa, R, Balkan, S, Can, U, Dalkara, T, Kirbas, D, Kumral, E, Ozdemir, G, Ozeren, A, Ozmenoglu, M, Ozturk, S, Lebedynets, V, Maly, V, Moskovko, S, Orzheshkovskyy, V, Smolanka, V, Yavors'Ka, V, Zozulya, I, Bamford, J, Barber, M, Barer, D, Baron, J, Bath, P, Broughton, D, Brown, M, Chataway, J, Curless, R, Darawil, K, Datta, P, Dennis, M, Durairaj, R, Egbuji, J, Ellis, S, Ford, G, Freeman, A, Fulcher, R, Gray, C, Harrington, F, Hudson, C, Iveson, E, James, M, Jenkinson, D, Kalra, L, Kelly, D, Krishnamoorthy, S, Langhorne, P, Magorrian, M, Macleod, M, Macwalter, R, Markus, H, Muhiddin, K, Muir, K, Murphy, P, Power, M, Price, C, Rashed, K, Robinson, T, Rudd, A, Sanmuganathan, P, Sharma, J, Shaw, L, Shetty, H, Smithard, D, Tyrrell, P, Vahidassr, M, Venables, G, Watt, M, White, R, Bousser, M, Amarenco, P, Chamorro, A, Fisher, M, Ford, I, Fox, K, Hennerici, M, Mattle, H, Rothwell, P, Ferrarese, C, PERFORM study, I, PERFORM STUDY, Investigator, Tedeschi, Gioacchino, Cras, Patrick, De Deyn, Peter Paul, and et al.

Subjects
perform study, Male, Thromboxane, International Cooperation, Receptors, Thromboxane, antiplatelet therapy, terutroban, Cardiovascular Disease, Receptors, 80 and over, Stroke, Aged, 80 and over, Aspirin, Ischemic Attack, Transient, Ischemic Attack, Transient, Double-Blind Method, Endpoint Determination, Dose-Response Relationship, Drug, Humans, Aged, Propionates, Naphthalenes, Treatment Outcome, Platelet Aggregation Inhibitors, Cardiovascular Diseases, Middle Aged, Female, Propionic Acids, Neurology, Terutroban, Anesthesia, tp receptor antagonist, stroke, secondary prevention, aspirin, Cardiology, Platelet aggregation inhibitor, Settore MED/26 - Neurologia, stroke prevention, Drug, Cardiology and Cardiovascular Medicine, medicine.drug, Human, medicine.medical_specialty, Dose-Response Relationship, Internal medicine, medicine, Dementia, In patient, business.industry, Platelet Aggregation Inhibitor, schemic, medicine.disease, DementiaI, transient ischemic attack, Ischemic stroke, Human medicine, Neurology (clinical), business, Propionic Acid, Naphthalene
Abstract

Background: Ischemic stroke is the leading cause of mortality worldwide and a major contributor to neurological disability and dementia. Terutroban is a specific TP receptor antagonist with antithrombotic, antivasoconstrictive, and antiatherosclerotic properties, which may be of interest for the secondary prevention of ischemic stroke. This article describes the rationale and design of the Prevention of cerebrovascular and cardiovascular Events of ischemic origin with teRutroban in patients with a history oF ischemic strOke or tRansient ischeMic Attack (PERFORM) Study, which aims to demonstrate the superiority of the efficacy of terutroban versus aspirin in secondary prevention of cerebrovascular and cardiovascular events. Methods and Results: The PERFORM Study is a multicenter, randomized, double-blind, parallel-group study being carried out in 802 centers in 46 countries. The study population includes patients aged ≥55 years, having suffered an ischemic stroke (≤3 months) or a transient ischemic attack (≤8 days). Participants are randomly allocated to terutroban (30 mg/day) or aspirin (100 mg/day). The primary efficacy endpoint is a composite of ischemic stroke (fatal or nonfatal), myocardial infarction (fatal or nonfatal), or other vascular death (excluding hemorrhagic death of any origin). Safety is being evaluated by assessing hemorrhagic events. Follow-up is expected to last for 2–4 years. Assuming a relative risk reduction of 13%, the expected number of primary events is 2,340. To obtain statistical power of 90%, this requires inclusion of at least 18,000 patients in this event-driven trial. The first patient was randomized in February 2006. Conclusions: The PERFORM Study will explore the benefits and safety of terutroban in secondary cardiovascular prevention after a cerebral ischemic event.

Published
2009
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36. Adipose- and bone marrow-derived mesenchymal stem cells display different osteogenic differentiation patterns in 3D bioactive glass-based scaffolds

Author

Rath, Subha Narayan, Nooeaid, P, Arkudas, A, Beier, J P, Strobel, L A, Brandl, A, Roether, J A, Horch, R E, Boccaccini, A R, Kneser, U, Rath, Subha Narayan, Nooeaid, P, Arkudas, A, Beier, J P, Strobel, L A, Brandl, A, Roether, J A, Horch, R E, Boccaccini, A R, and Kneser, U

Abstract

Mesenchymal stem cells can be isolated from a variety of different sources, each having their own peculiar merits and drawbacks. Although a number of studies have been conducted comparing these stem cells for their osteo-differentiation ability, these are mostly done in culture plastics. We have selected stem cells from either adipose tissue (ADSCs) or bone marrow (BMSCs) and studied their differentiation ability in highly porous three-dimensional (3D) 45S5 Bioglass®-based scaffolds. Equal numbers of cells were seeded onto 5 × 5 × 4 mm3 scaffolds and cultured in vitro, with or without osteo-induction medium. After 2 and 4 weeks, the cell–scaffold constructs were analysed for cell number, cell spreading, viability, alkaline phosphatase activity and osteogenic gene expression. The scaffolds with ADSCs displayed osteo-differentiation even without osteo-induction medium; however, with osteo-induction medium osteogenic differentiation was further increased. In contrast, the scaffolds with BMSCs showed no osteo-differentiation without osteo-induction medium; after application of osteo-induction medium, osteo-differentiation was confirmed, although lower than in scaffolds with ADSCs. In general, stem cells in 3D bioactive glass scaffolds differentiated better than cells in culture plastics with respect to their ALP content and osteogenic gene expression. In summary, 45S5 Bioglass-based scaffolds seeded with ADSCs are well-suited for possible bone tissue-engineering applications. Induction of osteogenic differentiation appears unnecessary prior to implantation in this specific setting.

Published
2013

37. Poly(glycerol sebacate)\Poly(butylene succinate‐dilinoleate) Blends as Candidate Materials for Cardiac Tissue Engineering

Author

Tallawi, M., primary, Rai, R., additional, R‐Gleixner, M., additional, Roerick, O., additional, Weyand, M., additional, Roether, J. A., additional, Schubert, D. W., additional, Kozlowska, A., additional, Fray, M. El, additional, Merle, B., additional, Göken, M., additional, Aifantis, K., additional, and Boccaccini, A. R., additional

Published
2013
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46. Biodegradable poly(glycerol sebacate)/poly (3-hydroxybutyrate)-TiO2 nanocomposites: fabrication and characterisation.

Author

Roether, J. A., Rai, R., Wolf, R., Tallawi, M., and Boccaccini, A. R.

Subjects
*GLYCERIN, *BIOCOMPATIBILITY, *CHITOSAN, *NANOSTRUCTURED materials, *X-ray diffraction
Abstract

Novel Nanocomposite films containing TiO2 nanoparticles incorporated in blend matrices of biocompatible and bioresorbable polymers, namely poly(glycerol sebacate) (PGS) and poly(3- hydroxybutyrate) P(3HB), were developed. The samples were fabricated via a sequential step of solvent casting followed by cross-linking. PGS/P(3HB) blends (controls) were fabricated in two different ratios, i.e. 7 : 1 and 8 : 1. Varying amounts of TiO2 nanoparticles (1 and 2 vol.-%) were incorporated into the matrices. SEM studies revealed that the TiO2 particles were distributed both within the matrix and on the surface of the films thus imparting surface nanotopography and increasing the surface roughness. These microstructural features combined with the cumulative effect of blending of the two polymeric systems influenced the wettability, chemical and mechanical properties of the films. In vitro degradation of the fabricated matrices in PBS medium over a 30 day period confirmed that the composites undergo weight loss and mechanical, chemical and surface topography changes. The nanocomposites constitute model biodegradable organic'inorganic systems suitable for tissue engineering applications. [ABSTRACT FROM AUTHOR]

Published
2014
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47. Poly(glycerol sebacate)\ Poly(butylene succinate-dilinoleate) Blends as Candidate Materials for Cardiac Tissue Engineering.

Author

Tallawi, M., Rai, R., R‐Gleixner, M., Roerick, O., Weyand, M., Roether, J. A., Schubert, D. W., Kozlowska, A., Fray, M. El, Merle, B., Göken, M., Aifantis, K., and Boccaccini, A. R.

Subjects
BIODEGRADABLE products, POLYMER research, TISSUE engineering, CHEMICAL synthesis, CARBOXYLIC acids, BUTENE
Abstract

Poly (glycerol sebacate) (PGS) and poly (butylene succinate-dilinoleate) (PBS-DLA) are biodegradable polymers with potential application in cardiac tissue engineering. In the present study novel blends comprising PGS prepolymer and PBS-DLA were prepared with varying compositions (70/30, 60/40, 50/50, 40/60, 30/70 and 0/100 in weight percentage). The physical, chemical, and mechanical properties of the PGS/PBS-DLA blends were measured and compared. By adding PBS-DLA to PGS the need for curing PGS prepolymer was eliminated, as the blended films are chemically stable. With increasing amount of PBS-DLA the hydrophobicity of the blend system increased reaching values close to that of neat PBS-DLA films. Furthermore, addition of PBS-DLA significantly affected the mechanical properties of the blends, i.e. the elastic modulus of the blends was enhanced with increasing PBS-DLA addition from 1.2 MPa to 54 MPa. At the same time, PBS-DLA addition led to decreased degradation rate of the films. Furthermore the PBS-DLA counteracted the acidity of the free carboxylic groups on the free end chains of the PGS prepolymer. In vitro cytocompatibility studies indicated high biocompatibility. Taken together the results confirm that the novel PGS/PBS-DLA matrices exhibit promising characteristics as a biomaterial for application in cardiac regeneration approaches. [ABSTRACT FROM AUTHOR]

Published
2013
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49. Glass-ceramics from plasma treated air pollution control (APC) residues.

Author

Amutha Rani, D., Roether, J. A., Gomez, E., Deegan, D. E., Cheeseman, C. R., and Boccaccini, A. R.

Subjects
AIR pollution, ALUMINUM oxide, SILICA, LANDFILLS, HEATING, CRYSTALLIZATION
Abstract

Air pollution control (APC) residues from a UK energy from waste plant were blended with alumina and silica, and melted using DC plasma arc technology to produce a glass. Results from the compliance leaching test BS EN 12457-4 demonstrated that the APC residue derived glass released only trace levels of metals, e.g. Pb (0.011 mg/kg), Zn (0.009 mg/kg) and CI- (0.2 mg/kg). These are significantly below the waste acceptance criteria (WAC) limit values for the disposal of waste to inert landfill. A powder processing method was used to convert the APC residues derived glass to a glass-ceramic during which the crystallisation behaviour and microstructural features were studied. Our results have shown that plasma treatment of APC residues produces an inert glass that has potential applications as a bulk material in civil engineering applications, or as a higher value glass-ceramic product after a crystallisation heat treatment. [ABSTRACT FROM AUTHOR]

Published
2009

50. Carbon nanotube deposits and CNT/SiO2 composite coatings by electrophoretic deposition.

Author

Chicatún, F., Cho, J., Schaab, S., Brusatin, G., Colombo, P., Roether, J. A., and Boccaccini, A. R.

Subjects
ELECTROPHORETIC deposition, CARBON nanotubes, SILICON oxide, COMPOSITE materials, SURFACE coatings, STAINLESS steel
Abstract

Multiwalled carbon nanotube (CNT) films have been successfully fabricated by electrophoretic deposition (EPD) on stainless steel substrates. Electrophoretic deposition was performed using optimised aqueous suspensions under constant voltage conditions. Triton X-100 was used as a surfactant to disperse CNT bundles, and iodine was added as a particle charger. CNT/SiO2 composite coatings were prepared by electrophoretic co-deposition. Experimental results show that the CNTs were efficiently mixed with SiO2 nanoparticles to form a network structure. Layered CNT/SiO2 porous composites were obtained by sequential EPD experiments alternating the deposition of CNT and SiO2 nanoparticles. The structure of all films deposited was studied in detail by scanning electron microscopy. Possible applications of CNT and CNT/SiO2 films are as porous coatings in the biomedical field, thermal management devices, biomedical sensors and other functional applications where the properties of CNTs are required. [ABSTRACT FROM AUTHOR]

Published
2007
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