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1. Perivascular Fat: A Novel Risk Factor for Coronary Artery Disease

Author

Spyridon Simantiris, Aikaterini Pappa, Charalampos Papastamos, Panagiotis Korkonikitas, Charalambos Antoniades, Constantinos Tsioufis, and Dimitris Tousoulis

Subjects
perivascular adipose tissue, cardiovascular disease, atherosclerosis, pericoronary adipose tissue attenuation, fat attenuation index, coronary computed tomography angiography, Medicine (General), R5-920
Abstract

Perivascular adipose tissue (PVAT) interacts with the vascular wall and secretes bioactive factors which regulate vascular wall physiology. Vice versa, vascular wall inflammation affects the adjacent PVAT via paracrine signals, which induce cachexia-type morphological changes in perivascular fat. These changes can be quantified in pericoronary adipose tissue (PCAT), as an increase in PCAT attenuation in coronary computed tomography angiography images. Fat attenuation index (FAI), a novel imaging biomarker, measures PCAT attenuation around coronary artery segments and is associated with coronary artery disease presence, progression, and plaque instability. Beyond its diagnostic capacity, PCAT attenuation can also ameliorate cardiac risk stratification, thus representing an innovative prognostic biomarker of cardiovascular disease (CVD). However, technical, biological, and anatomical factors are weakly related to PCAT attenuation and cause variation in its measurement. Thus, to integrate FAI, a research tool, into clinical practice, a medical device has been designed to provide FAI values standardized for these factors. In this review, we discuss the interplay of PVAT with the vascular wall, the diagnostic and prognostic value of PCAT attenuation, and its integration as a CVD risk marker in clinical practice.

Published
2024
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2. Modeling the Impact of the Green Roofs as a Nature-Based Solution to Mitigate the Urban Heat Island Effects over Attica, Greece

Author

Christina Kalogeri, Christos Spyrou, Marika Koukoula, Pantelis M. Saviolakis, Aikaterini Pappa, Michael Loupis, Charis Masouras, and Petros Katsafados

Subjects
urban heat island effects, nature-based solutions, green roofs, WRF, multi-layer urban scheme, local climate zones, Environmental sciences, GE1-350
Abstract

The main aim of this study is to model the Nature-based solution of Green Roofs (GRs) in order to assess their efficiency as a mitigation strategy for UHI effects and extreme summertime temperatures over Attica in Greece. The area of study is a region that encompasses Athens, the largest Metropolitan area of Greece, and the suburbs. The analysis has been performed with the use of an advanced modeling system that consists of the mesoscale Weather Research and Forecasting model (WRF) and the advanced multilayer urban canopy scheme building energy parameter and building energy model (BEP/BEM). The two modules are fully coupled, forming WRF urban. For a better description of the urban environment and in order to use the full capabilities of the urban canopy scheme, 11 urban classes corresponding to the WUDAPT Local Climate Zones (LCZ) were used instead of the 3 traditional urban classes that the default version uses. Sensitivity tests for a major heatwave that affected the area of study have been performed in order to evaluate the impact of GRs on the UHI structure. Results indicate that the modification of the roof energy budget decreased the maximum temperature during heatwaves and altered the spatio-temporal pattern of the effect.

Published
2023
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3. An Early Warning System to Predict Rainfall Event in Attica, Greece: The Case Study of 30 September 2018

Author

Aikaterini Pappa, Christos Spyrou, John Kalogiros, Maria Tombrou, George Varlas, and Petros Katsafados

Subjects
nowcasting, LAPS, data assimilation, seamless prediction, medicane, weather radar, Environmental sciences, GE1-350
Abstract

A forward advection scheme is incorporated in an advanced data assimilation model to provide very short-term predictions. The Local Analysis and Prediction System (LAPS) is implemented in the nowcasting mode in a case study of extreme precipitation event over Attica, Greece. The LAPS assimilated remote sensing data from satellite retrievals and XPOL radar precipitation measurements to produce objective analyses alongside their nowcasts in a forecast window up to 3 h. The results indicate that the assimilation of remote sensing data can increase the short-term precipitation predictability, with varying performance depending on the type and the combination of the assimilated remote sensing data.

Published
2023
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4. Implementation of a Nowcasting Hydrometeorological System for Studying Flash Flood Events: The Case of Mandra, Greece

Author

Christos Spyrou, George Varlas, Aikaterini Pappa, Angeliki Mentzafou, Petros Katsafados, Anastasios Papadopoulos, Marios N. Anagnostou, and John Kalogiros

Subjects
nowcasting, data assimilation, flash flood, weather radar, LAPS, CHAOS, Science
Abstract

Severe hydrometeorological hazards such as floods, droughts, and thunderstorms are expected to increase in the future due to climate change. Due to the significant impacts of these phenomena, it is essential to develop new and advanced early warning systems for advance preparation of the population and local authorities (civil protection, government agencies, etc.). Therefore, reliable forecasts of extreme events, with high spatial and temporal resolution and a very short time horizon are needed, due to the very fast development and localized nature of these events. In very short time-periods (up to 6 h), small-scale phenomena can be described accurately by adopting a “nowcasting” approach, providing reliable short-term forecasts and warnings. To this end, a novel nowcasting system was developed and presented in this study, combining a data assimilation system (LAPS), a large amount of observed data, including XPOL radar precipitation measurements, the Chemical Hydrological Atmospheric Ocean wave System (CHAOS), and the WRF-Hydro model. The system was evaluated on the catastrophic flash flood event that occurred in the sub-urban area of Mandra in Western Attica, Greece, on 15 November 2017. The event was one of the most catastrophic flash floods with human fatalities (24 people died) and extensive infrastructure damage. The update of the simulations with assimilated radar data improved the initial precipitation description and led to an improved simulation of the evolution of the phenomenon. Statistical evaluation and comparison with flood data from the FloodHub showed that the nowcasting system could have provided reliable early warning of the flood event 1, 2, and even to 3 h in advance, giving vital time to the local authorities to mobilize and even prevent fatalities and injuries to the local population.

Published
2020
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6. List of contributors

Author

Elisa Adirosi, Pier Paolo Alberoni, Emmanouil N. Anagnostou, Marios Anagnostou, Marios N. Anagnostou, Alessandro Battaglia, James Beauchamp, Thiago Souza Biscaro, Bogdan Bochenek, Erik Borg, Stephan Borrmann, V.N. Bringi, Luca Brocca, Andrea Camplani, Daniele Casella, Arianna Cauteruccio, Micael Amore Cecchini, Daniel Cecil, Ying-Wen Chen, Leo Pio D’Adderio, Karoline Diehl, Peter Dietrich, Stefano Dietrich, Stefano Federico, Thomas Gastaldo, Patrick N. Gatlin, Yasutaka Ikuta, Anna Jurczyk, Eugenia Kalnay, John Kalogiros, Kaya Kanemaru, Petros Katsafados, Dimitrios Katsanos, Chris Kidd, Christian Klepp, Keiichi Kondo, Shunji Kotsuki, Paul A. Kucera, Luca G. Lanza, Guo-Yuan Lien, Joanna Linkowska, Federico Lombardo, Viviana Maggioni, Agostino Manzato, Christian Massari, Toshihisa Matsui, Enrique Vieira Mattos, Paola Mazzoglio, Angeliki Mentzafou, Andrés Merino, Silas Michaelides, Subir Kumar Mitra, Takemasa Miyoshi, Mona Morsy, Kamil Mroz, Andrés Navarro, Jeffrey A. Nystuen, Kozo Okamoto, Rômulo Augusto Jucá Oliveira, Irena Otop, Shigenori Otsuka, Katarzyna Ośródka, Tiziana Paccagnella, Giulia Panegrossi, Anastasios Papadopoulos, Aikaterini Pappa, Magdalena Pasierb, Virginia Poli, Federico Porcù, Khalil Ur Rahman, Adrianos Retalis, Sarah Ringerud, Paolo Sanò, Mathew Raymond Paul Sapiano, Masaki Satoh, Thomas Scholten, Songhao Shang, Ehsan Sharifi, Youssef Sherief, Christos Spyrou, Miklós Szakáll, Jan Szturc, Koji Terasaki, Alexander Theis, Merhala Thurai, Ali Tokay, Hirofumi Tomita, Rosa Claudia Torcasio, Filippos Tymvios, George Varlas, Daniel Alejandro Vila, Gianfranco Vulpiani, Nai-Yu Wang, Jun-Ichi Yano, and Hisashi Yashiro

Published
2022
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7. I-CARE, a European Prospective Cohort Study Assessing Safety and Effectiveness of Biologics in Inflammatory Bowel Disease

Author

Laurent Peyrin-Biroulet, Jean-François Rahier, Julien Kirchgesner, Vered Abitbol, Sebastian Shaji, Alessandro Armuzzi, Konstantinos Karmiris, Javier P. Gisbert, Peter Bossuyt, Ulf Helwig, Johan Burisch, Henit Yanai, Glen A. Doherty, Fernando Magro, Tamás Molnar, Mark Löwenberg, Jonas Halfvarson, Edyta Zagorowicz, Hélène Rousseau, Cédric Baumann, Filip Baert, Laurent Beaugerie, Jean-Marc Gornet, Jean-Marie Reimund, Xavier Hebuterne, Aurélien Amiot, Franco Armelao, Pierre Blanc, Claudio Papi, Guillaume Pineton De Chambrun, Xavier Roblin, null Chu, Sohail Shariq, Nikolaos Viazis, Jimmy Limdi, Piotr Eder H, Georgios Michalopoulos, Andrew Bell, Livia Biancone, Marie Dewitte, Zia Mazhar, Denis Franchimont, Stephane Nancey, Gilles Macaigne, Maria Beatrice Principi, Mathurin Fumery, Gareth Parkes, Jean-Christophe Valats, Glen Doherty, Guillaume Bouguen, Hersin Tsai, Mohsin Gangi, Natalia Pedersen, Frédéric Heluwaert, Richard Shenderey, Sebastian Zeissig, Jeffrey Butterworth, Fabiana Castiglione, Lynsey Corless, Camille Zallot, Salil Singh, Sunil Sonwalkar, Elizabeth Clayton, Deven Vani, Guy Bellaiche, Martine De Vos, Uri Kopylov, Triana Lobaton, Christophe Locher, Gerassimos Mantzaris, George Abouda, Katie Smith, Michael Sprakes, Angeliki Theodoropoulou, Emma Wesley, Joëlle Bonnet, David Elphick, Cyrielle Gilletta, John Gordon, David Laharie, Antoine Nakad, Ambrogio Orlando, Patrick Dubois, Peter Hasselblatt, Christophe Michiels, Cathryn Preston, Anca Staicu, Lucine Vuitton, Mehdi Kaassis, Ally Speight, Deb Ghosh, Nicolas Mathieu, Anne-Laure Pelletier, Anne Phillips, Romain Altwegg, Irit Avni, null biron, Jonathon Landy, Maria Nachury, Achuth Shenoy, Caroline Trang, Georgios Bamias, Klaudia Farkas, Christian Maaser, Ariella Shitrit, Britta Siegmund, Jérôme Filippi, Colm O'morain, Laurent Costes, David Hobday, Zoltán Szepes, Emma Calabrese, Helen Dallal, Michael Fung, Arvind Ramadas, Bijay Baburajan, Konrad Koss, Christophe Barberis, Anthony Buisson, Morgane Amil, Paola Balestrieri, Matthew Johnson, Maria Tzouvala, Stéphanie Viennot, Ferenc Nagy, Nick Thompson, Laurent Alric, Sunil Samuel, Anne Bourrier, Elise Chanteloup, Emilie Del Tedesco, Marcus Harbord, Alan Lobo, Sally Myers, Richard Pollok, Tariq Ahmad, Rakesh Chaudhary, Christos Karakoidas, Ashraf Soliman, Carmen Stefanescu, Georgios Theocharis, Stijn Vanden Branden, Belén Beltran, Yoram Bouhnik, Arnaud Bourreille, Joana Branco, Ben Colleypriest, Rami Eliakim, Paul Knight, Aoibhlinn O'toole, Virgina Robles, Konstantinos Triantafyllou, Marta Maia Bosca, Guy Lambrecht, Lucia Marquez Mosquera, Simon Panter, Aikaterini Pappa, Marion Simon, Ganesh Sivaji, Christophe Bellanger, Arthur Belle, Natalia Borruel, Laurence Egan, Harald Peeters, Daniel Sharpstone, Ramesh Arasaradnam, José Manuel Benitez, Jens Frederik Dahlerup, Olga Giouleme, Miguel Minguez, Eftychia Tsironi, Angela Variola, Patrick Allen, Lucille Boivineau, Andy Cole, Nina Dib, Fernando Gomollon, Richard Johnston, Konstantinos Katsanos, Nick Kennedy, Marianne Kiszka-Kanowitz, Ignacio Marin-Jimenez, Pál Miheller, Pilar Nos, Othman Saraj, Lars Vinter-Jensen, Eran Zittan, Clotilde Baudry, Xavier Calvet, Marie-Christine Cazelles-Boudier, Jean-Louis Coenegrachts, Garret Cullen, Marco Daperno, Anjan Dhar, Romain Gerard, Nanna Jensen, Nitsan Maharshak, Mark Mcalindon, Simon Mcloughlin, Miles Parkes, Kamal Patel, Armando Peixoto, Dimitrios Polymeros, Francisco Portela, Rodolfo Rocca, Philippe Seksik, Sreedhar Subramanian, Ruth Tennenbaum, Raja Atreya, Oliver Bachmann, Arthur Berger, Renáta Bor, Maire Buckley, Daniel Carpio, María Chaparro, Francesco Costa, Eugeni Domenech, Maria Esteve, Stephen Foley, Jordi Guardiola, Ioannis Koutroubakis, Tanja Kuehbacher, Cécilia Landman, Alessandro Lavagna, Noemí Manceñido, Míriam Mañosa, Maria Dolores Martín-Arranz, Laurianne Plastaras, Maria Lia Scribano, Subhasish Sengupta, Nils Teich, My-Linh Tran-Minh, Evanthia Zampeli, Leila Amininejad, Teresa Arroyo, Alain Attar, Ann-Sofie Backman, Anita Bálint, John Beckly, Shomron Ben Horin, Sónia Bernardo, Ludovic Caillo, Bénédicte Caron, María Shanika de Silva, Anna FábiáN, Gionata Fiorino, Ana Gutierrez, Adi Lahat, Mohamed Masmoudi, Marco Mendolaro, Vinciane Muls, Florian Poullenot, Christopher Probert, Catherine Reenaers, Mariann Rutka, Zaman Sarwari, Joanne Sayer, Beatriz Sicilia, Helena Sousa, Catherine van Kemseke, Yamile Zabana, Marco Astegiano, Paul Banim, Dominik Bettenworth, Médina Boualit, Jacob Broder Brodersen, Angeliki Christidou, Rachel Cooney, João Cortez Pinto, Portugal Marília Cravo, Anneline Cremer, Silvio Danese, Antonio di Sabatino, Jan Fallingborg, Antonio Ferronato, Esther Garcia Planella, Sanjay Gupta, Eran Israeli, Samantha Kestenbaum, Lone Larsen, Elisabeth Macken, Nicoletta Mathou, Ágnes Milassin, Joanna Pofelski, Chiara Ricci, Francisco Rodriguez-Moranta, Martin Schmidt-Lauber, Ian Shaw, Marta Soares, Heithem Soliman, Christos Triantos, Konstantinos Zografos, Anurag Agrawal, Alexandre Aubourg, Manuel Barreiro-de Acosta, Jesús Barrio, Daniel Bergemalm, Fernando Bermejo, Giorgia Bodini, Johan Bohr, Dimitrios Christodoulou, Christophe Claessens, Paul Collins, Ruth de Francisco, Santiago Garcia, Sotirios Georgopoulos, Felix Goutorbe, Chrisostomos Kalantzis, Anastasia Kourikou, Vincent Mace, Georgia Malamut, Paula Ministro, Isabelle Nion Larmurier, Elena Ricart, Mélanie Serrero, Juliette Sheridan, Petra Weimers, Vibeke Andersen, Bruno Arroja, Bernd Bokemeyer, Luis Bujanda, Thibault Degand, Carl Eriksson, Cécile Garceau, Henning Glerup, Idan Goren, Lucina Jackson, Stéphane Koch, Francisco Mesonero, Ingrid Ordas, Pauline Riviere, Simone Saibeni, João Soares, Noémie Tavernier, Klaus Theede, Bella Ungar, Elke Bästlein, Antonio Gasbarrini, Andreas Protopapas, Wolfgang Reindl, Fabrizio Bossa, Ailsa Hart, Franz-Josef Heil, Anthony O'Connor, Bas Oldenburg, Luca Pastorelli, null Stephen patchett, Subramaniam Ramakrishnan, John de Caestecker, Ana Echarri, David Kevans, Jürgen Büning, Rosa Coelho, Jeroen Jansen, Benjamin Koslowski, Christopher Wells, Daniel Ceballos, Ingrid König, Hari Padmanabhan, Timi Patani, Raheel Qureshi, Matthieu Allez, Emmanouil Archavlis, Delphine Bonnet, Luisa Guidi, Deirdre Mcnamara, Piero Vernia, Michael Weidenhiller, Lang Alon, Trine Boysen, Charlotte Delattre, Richard Farrell, Rolf-Achim Krüger, Thierry Paupard, Ida Vind, Flavio Caprioli, Vladimir Gancho, Vincent Quentin, Benjamin Avidan, Geert D’Haens, Jane Mccarthy, Jonathon Snook, Konstantinos Soufleris, Frank Zerbib, Dan Carter, Annekatrien Depla, Thomas Eisenbach, Walter Fries, Nikolaos Grammatikos, Saskia Ilegems, Antonio Lopez-Sanroman, Jacques Moreau, Gabriele Riegler, Svend Rietdijk, Marta Rocha, Isabelle Rosa, Barbara Ryan, Yelena Yeremenko, Arnaud Boruchowicz, Filipe Damião, Foteini Laoudi, Andreas Lügering, Giampiero Macarri, Konstantinos Thomopoulos, Luísa Barros, Thomas Blixt, Aurélien Garros, Sam Khorrami, Harry Sokol, Andreas Sturm, Dan Livovsky, Jochen Maul, Heinrich Miks, Vasileios Papadopoulos, Carsten Schmidt, Yifat Snir, Lise Svenningsen, Wafaa Ahmed, Yelena Broitman, Emmanuel Cuillerier, Prashant Kant, Jan Leyden, Lev Lichtenstein, Susana Lopes, Chloé Martineau, Hugh Mulcahy, Axel Schweitzer, Fiona Van Schaik, Hagar Banai, Pauline Danion, Charlotte Dulery, Herma Fidder, Claire Gay, Hervé Hagege, Florence Harnois, Søren Peter Jørgensen, Jens Müller-Ziehm, Michail Oikonomou, Carolina Palmela, Jörg Schulze/Röske, Mark Smith, Tamar Thurm, Francesca Bresso, Hedia Brixi, John Jones, Padraig Macmathuna, Claire Painchart, Yulia Ron, Marianne Vester-Andersen, Gonçalo Alexandrino, Norbert Börner, Mariana Cardoso, Cristina Chagas, Axel Dignaß, Iris Dotan, Charlotte Hedin, Pantelis Karatzas, Panagiotis Kasapidis, Károly Palatka, Georgios Sakizlis, Ana Wilson, Nick Bosanko, Paulo Caldeira, Charlotte Gagniere, Louise Libier, Camille Meunier, Gero Moog, Audrey Pasquion, Roberta Pica, Ayesha Akbar, Nadia Arab, Guillaume Cadiot, João Carvalho, Claire Charpignon, Laus Fellermann, Sigal Fishman, Gerald Fraser, Nathan Gluck, Mark Hoesl, Jarosław Kierkus, Maria Klopocka, Eduardo Martin Arranz, Luis Menchen, Susanna Nikolaus, Anca Petrache, Cyriel Ponsioen, Sabino Riestra, Pilar Robledo, Cristina Rodriguez, Misheal Samer, Matthias Tischer, Joanna Wypych, Julien Baudon, Cristina Bezzio, Gilles Boschetti, Tom Creed, Maria Giulia Demarzo, Stefano Festa, Andrés Figueroa, Mette Julsgaard, Pablo Navarro, Pablo Perez-Galindo, Cléa Rouillon, Emanuele Sablich, Joan Tosca, Mathias Vidon, Marine Vidon, René-Louis Vitte, Anne Wampach, Isabelle Clerc Urmes, Marc Borie, Mathieu Uzzan, Kelly Chatten, Rimmer Peter, Iqbal Tariq, Marta Cossignani, Fiorella Cañete, Tom Holvoet, Susanne Krasz, Sandra Dias, Hadas Abalia, Aziza Abaza, Gal Abramovich, Ingrid Ackzell, Carol Adams, Catherine Addleton, Erika Alfambra, Alicia Algaba, Clare Allcock, Joanna Allison, Karine Amouriaux, Julie Anderson, Emma Anderson, Saskia Appelmans, Lisa Armstrong, Stacey Atkins, Masoumeh Attaran-Bandarabadi, Yvonne Bailey, Stephanie Bardot, Natasha Beck, Lillie Bennett, Jonathan Phil Bergfeld, Ramdane Berkane, Hanne Boey, Louise Bowlas, Joanne Bradley-Potts, Tracy Brear, Nicole Bretlander-Peters, Ellen Brown, Johanna Brown, Elizabeth Buckingham, Katrien Buellens, Rhian Bull, Maura Burke, Leighanne Burns, Julie Burton, Agness Bwalya, Karine Cabanas, Muriel Callaghan, Océane Camou, Debbie Campbell, Elvira Capoferro, Mandy Carnahan, Cornelia Carnio, Anne Carter, Concetta Casali Clack, Leïla Chedouba, Bessie Cipriano, Sophie Claeys, Manon Closset, Dilek Coban, Sara Cococcia, Carolann Coe, Helen Cole, Emilie Collet, Kayleigh Collins, Isabelle Combes, Emma Connor, Kathryn Constantin, Susan Cooke, Nathanaëlle Cornet, Estelle Corrihons, Pilar Corsino, Rosie Cortaville, Donna Cotterill, Amanda Cowton, Harriet Cox, Viktoria Cripps, Amanda Crowder, Tzufit Cukier, Amelia Daniel, Chris Dawe, Jose de Haan, Rosanna de la Croix, Evva Dejonckheere, Juan Delare Villanegro, Guillaume Delaval, Mariangela Delliponti, Aude Delommez, Emilie Detry, Melanie Dhanaratne, Laura Diez Galan, Marie Dodel, Emma Dooks, Joseph Du Cheyron, Linda Duane, Jennifer Dulling Vulgo Cochran, Simona Dyer, Harvey Dymond, Charlotte Ekblad, Kerry Elliott, Ingrid Emmerson, Irène Eugene-Jolchine, Lorna Fleming, Eve Fletcher, Sarah Ford, Greg Forshaw, Angela Foulds, Caroline Francois, Nicole Fuge, Gal Gafni, Miri Ganon, Olga Garcia Nuñez, Laura Garcia Ramirez, Sophie Gelder, Raimonda Gettkowski, Daniela Gilardi, Paolo Giuffrida, Vincent Gobert, Jo Godden, Nuala Godwin, Kay Goulden, Sharon Graham, Charlotte Green, Marie Green, Aboubakar Gueye, Tuba Guler, Ida Gustavsson, Helena Hadjisavvas, Fiona Hammonds, Christina Hantzi, Marion Hauke, Julie Haydock, Orla Hayes, Lizette Helbo Nislev, Jessica Hochstodter, Ashleigh Hogg, Manuela Hölbing, Maureen Holland, Maartje Holsbergen, Linda Howard, Aviya Hoyda, Robert Hull, Jane Irish, Wendy Jackson, Wendy Janssen, Lesley Jeffrey, Sofia Jourdan, Izabela Jutrowska, Chava Kaniel, Theofilos Karezos, Niamh Kelly, Jessica Kelly, Mary Kennedy, Una Kennedy, Joyce Kibaru, Gemma Kirkman, Janine Klaproth, Corinna Kneese, Andrea Koch, Kathleen Kokke, Martha Koppelow, Sabine Krause, Sabine Krauspe, Petra Kwakkenbos, Nunzia Labarile, Hannah Lang, Marianne Lassailly, Martine Leconte, Linda Lepczynski, Emma Levell, Nina Levhar, Kerstin Lindhort, Jessica Lisle, Beatriz Lopez Cauce, Gabriele Lorenz, Ambra Lovati, Tracey Lowry, Margareta Lund, Anne Lutz Vorderbrügge, Suzanne Maansson, Videsheka Madapathage, Maelys Cheviakoff, Alison Magness, Orla Manley, Catherine Manyoni, Ingke Marg, Antonella Marra, Carole Martins, Arianna Massella, Aurore Mathias, Danielle Mervyn, Charlotte Minsart, Sally Mitchell, Kathleen Monks, Mélanie Montero, Alson Moore, Maren Moser, Alison Moss, Angela Mullen, M. Francisca Murciano, Deanna Naylor, Ansgar Nehus, Anne Nicholson, Sarah Nöding, Sinead Nolan, Janet Nörenberg, Clare Northcott, Jim O'Connell, Alison O’Kelly, Noam Orbach-Zingboim, Judit Orobitg, Charlene Otieno, Charlotte Owen, Sarah Patch, Maor Pauker, Renate Pauli, Harriet Pearson, Falgon Peggy, Séverine Petit, Christine Petrissans, Simona Piergallini, Lucy Pippard, Laura Pitt, Gabriella Pócsik, Yoann Poher, Chloé Pomes, Lucy Pritchard, Laura Puchades, Sheena Quaid, Aleem Rana, Dana Raynard, Mykla Reilly, Sonja Reinert, Manuela Reinknecht, Baerbel Renner, Rob Reynolds, Giulia Rizzuto, Matthew Robinson, Joke Robrechts, Eva M. Rodriguez, Efrat Rosenblum, Tamlyn Russel, Ibiyemi Sadare, Noa Salama, Toos Schakel, Anja Schauer, Elisa Schiavoni, Caroline Shaw, Sarah Shelton, Virginie Sicart, Elodie Siouville, Orla Smith, Théo Soude, Sophie Stephenson, Elaine Stephenson, Marjan Steppe, An Sterkx, Jo Stickley, Kathleen Sugrue, Natalia Swietec, Charlotte Tasiaux, Bhavneet Thamu, Susane Thomas, Ogwa Tobi, Kahina Touabi, Shifra Tovi, Julie Tregonning, Laura Turchini, Julia Unkhoff, Olesya Unruh, Nurcan Uzun, Frauke Van Aert, Sandrine Vanden Bergh, Louise Vandenbroucke, Laura Vansteenkiste, Shay Vardit, Valentin Vergriete, Elaine Walker, Eleanor Warner, Olivia Watchorn, Ekaterina Watson, Marie-Claire Wauthier, Belgium Maria Weetman, Margaret Weston, Wiebke West-Petroschka, Susann Wienecke, Kerstin Wierling, Miriam Wiestler, Rebecca Wilcox, Elva Wilhelmsen, Angharad Williams, Georgina Williamson, Deborah Wilson, Kate Wistance, Nicolas Wortmann, Subie Wurie, Karin Yadgar, Gail Young, Megan Young, Julien Aucouturier, Marie- Jo Bertin, Hasnae Bougrine, Marie Coisnon, Antoine Defrance, Kati Gutierrez, Amel Harouz, Laure Jerber, Aida Khlifi, Amina Kirati, Nasaladjine Liworo, Maude Logoltat, Charlotte Mailhat, Chancely M'Bayi, Yasmina Medane, Dalal Merkhoufa, Saouda Mohamed Elhad, Bertille Monthe, Fanny Moyon, Pascaline Rabiega, Jennifer Sekela, Charlotte Thilloy, Naima Hamamouche, Frederic Partisotti, Patrick Blandin, Hocine Mokhtari, Laure Coutard, UCL - SSS/IREC/MONT - Pôle Mont Godinne, UCL - (MGD) Service de gastro-entérologie, Gastroenterology and hepatology, Gastroenterology and Hepatology, and AGEM - Amsterdam Gastroenterology Endocrinology Metabolism

Subjects
Biological Products, Hepatology, Efficacy, Lymphoma, Tumor Necrosis Factor-alpha, Inflammatory Bowel Disease, Gastroenterology, Biologics, Crohn Disease/diagnosis, Inflammatory Bowel Diseases/chemically induced, Colitis, Ulcerative/diagnosis, Cohort Studies, Necrosis, Immunologic Factors/adverse effects, Humans, Female, 03.02. Klinikai orvostan, Prospective Studies, Safety, I-CARE, Cancer, Immunosuppressive Agents
Abstract

BACKGROUND AND AIMS: There is a need to evaluate the benefit-risk ratio of current therapies in inflammatory bowel disease (IBD) patients to provide the best quality of care. The primary objective of I-CARE (IBD Cancer and serious infections in Europe) was to assess prospectively safety concerns in IBD, with specific focus on the risk of cancer/lymphoma and serious infections in patients treated with anti-tumor necrosis factor and other biologic monotherapy as well as in combination with immunomodulators.METHODS: I-CARE was designed as a European prospective longitudinal observational multicenter cohort study to include patients with a diagnosis of Crohn's disease, ulcerative colitis, or IBD unclassified established at least 3 months prior to enrollment.RESULTS: A total of 10,206 patients were enrolled between March 2016 and April 2019, including 6169 (60.4%) patients with Crohn's disease, 3853 (37.8%) with ulcerative colitis, and 184 (1.8%) with a diagnosis of IBD unclassified. Thirty-two percent of patients were receiving azathioprine/thiopurines, 4.6% 6-mercaptopurine, and 3.2% methotrexate at study entry. At inclusion, 47.3% of patients were treated with an anti-tumor necrosis factor agent, 8.8% with vedolizumab, and 3.4% with ustekinumab. Roughly one-quarter of patients (26.8%) underwent prior IBD-related surgery. Sixty-six percent of patients had been previously treated with systemic steroids. Three percent of patients had a medical history of cancer prior to inclusion and 1.1% had a history of colonic, esophageal, or uterine cervix high-grade dysplasia.CONCLUSIONS: I-CARE is an ongoing investigator-initiated observational European prospective cohort study that will provide unique information on the long-term benefits and risks of biological therapies in IBD patients. (EudraCT, Number: 2014-004728-23; ClinicalTrials.gov, Number: NCT02377258).

Published
2022
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8. Implementation of a Nowcasting Hydrometeorological System for Studying Flash Flood Events: The Case of Mandra, Greece

Author

Marios N. Anagnostou, Angeliki Mentzafou, John Kalogiros, Petros Katsafados, Christos Spyrou, Anastasios Papadopoulos, George Varlas, and Aikaterini Pappa

Subjects
education.field_of_study, Flood myth, Warning system, Meteorology, Nowcasting, Science, Population, nowcasting, law.invention, weather radar, LAPS, law, CHAOS, Flash flood, Thunderstorm, General Earth and Planetary Sciences, Environmental science, data assimilation, flash flood, WRF, Weather radar, Hydrometeorology, education
Abstract

Severe hydrometeorological hazards such as floods, droughts, and thunderstorms are expected to increase in the future due to climate change. Due to the significant impacts of these phenomena, it is essential to develop new and advanced early warning systems for advance preparation of the population and local authorities (civil protection, government agencies, etc.). Therefore, reliable forecasts of extreme events, with high spatial and temporal resolution and a very short time horizon are needed, due to the very fast development and localized nature of these events. In very short time-periods (up to 6 h), small-scale phenomena can be described accurately by adopting a “nowcasting” approach, providing reliable short-term forecasts and warnings. To this end, a novel nowcasting system was developed and presented in this study, combining a data assimilation system (LAPS), a large amount of observed data, including XPOL radar precipitation measurements, the Chemical Hydrological Atmospheric Ocean wave System (CHAOS), and the WRF-Hydro model. The system was evaluated on the catastrophic flash flood event that occurred in the sub-urban area of Mandra in Western Attica, Greece, on 15 November 2017. The event was one of the most catastrophic flash floods with human fatalities (24 people died) and extensive infrastructure damage. The update of the simulations with assimilated radar data improved the initial precipitation description and led to an improved simulation of the evolution of the phenomenon. Statistical evaluation and comparison with flood data from the FloodHub showed that the nowcasting system could have provided reliable early warning of the flood event 1, 2, and even to 3 h in advance, giving vital time to the local authorities to mobilize and even prevent fatalities and injuries to the local population.

Published
2020
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9. Novel Poxin Stable cGAMP‐Derivatives Are Remarkable STING Agonists

Author

Samuele Stazzoni, Daniel F. R. Böhmer, Fabian Hernichel, Dilara Özdemir, Aikaterini Pappa, David Drexler, Stefan Bauernfried, Gregor Witte, Mirko Wagner, Simon Veth, Karl‐Peter Hopfner, Veit Hornung, Lars M. König, and Thomas Carell

Subjects
Ribose, Membrane Proteins, Nucleosides, DNA, General Chemistry, Endonucleases, Antiviral Agents, Nucleotidyltransferases, Immunity, Innate, Catalysis, Mice, Interferon Type I, Animals, Cytokines, Nucleotides, Cyclic
Abstract

2',3'-cGAMP is a cyclic A- and G-containing dinucleotide second messenger, which is formed upon cellular recognition of foreign cytosolic DNA as part of the innate immune response. The molecule binds to the adaptor protein STING, which induces an immune response characterized by the production of type I interferons and cytokines. The development of STING-binding molecules with both agonistic as well as antagonistic properties is currently of tremendous interest to induce or enhance antitumor or antiviral immunity on the one hand, or to treat autoimmune diseases on the other hand. To escape the host innate immune recognition, some viruses encode poxin endonucleases that cleave 2',3'-cGAMP. Here we report that dideoxy-2',3'-cGAMP (1) and analogs thereof, which lack the secondary ribose-OH groups, form a group of poxin-stable STING agonists. Despite their reduced affinity to STING, particularly the compound constructed from two A nucleosides, dideoxy-2',3'-cAAMP (2), features an unusually high antitumor response in mice.

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