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1. Quick Assessment of the Lower Limit of Cerebral Autoregulation Using Transcranial Doppler during Cardiopulmonary Bypass in Cardiac Surgery: A Feasibility Study

Author

Olivier Desebbe, Etienne Bachelard, Marie Deperdu, Romain Manet, Brenton Alexander, Johanne Beuvelot, Joseph Nloga, Alexandre Joosten, and Laurent Gergelé

Subjects
cerebral autoregulation, cardiopulmonary bypass, transcranial doppler, cardiac surgery, Diseases of the circulatory (Cardiovascular) system, RC666-701
Abstract

Background: During cardiac surgery, maintaining a mean arterial pressure (MAP) within the range of cerebral autoregulation (CA) may prevent postoperative morbidity. The lower limit of cerebral autoregulation (LLA) can be determined using the mean velocity index (Mx). The standard Mx is averaged over a ten second period (Mx10s) while using a two second averaging period (Mx2s) is faster and may record more rapid variations in LLA. The objective of this study is to compare a quick determination of LLA (qLLA) using Mx2s with the reference LLA (rLLA) using Mx10s. Methods: Single center, retrospective, observational study. Patients undergoing cardiac surgery with cardiopulmonary bypass. From January 2020 to April 2021, perioperative transcranial doppler measuring cerebral artery velocity was placed on cardiac surgery patients in order to correlate with continuous MAP values. Calculation of each patient’s Mx was manually determined after the surgery and qLLA and rLLA were then calculated using a threshold value of Mx >0.4. Results: 55 patients were included. qLLA was found in 78% of the cases versus 47% for rLLA. Despite a –3 mmHg mean bias, limits of agreement were large [–19 mmHg (95% CI: –13; –25), and +13 mmHg (95% CI: +6; +19)]. There was an important interobserver variability (kappa rLLA = 0.46; 95% CI: 0.24–0.66; and Kappa qLLA = 0.36; 95% CI: 0.20–0.52). Conclusions: Calculation of qLLA is feasible. However, the large limits of agreement and significant interobserver variability prevent any clinical utility or interchangeability with rLLA.

Published
2023
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2. EPIdemiology of Surgery-Associated Acute Kidney Injury (EPIS-AKI): study protocol for a multicentre, observational trial

Author

Melanie Meersch, Mira Küllmar, Carola Wempe, Alexander Zarbock, Ke Peng, Sigismond Lasocki, Thomas Rimmele, Maria Martin, Olivier Desebbe, Michele Rossi, Matthias Heringlake, Christina Massoth, Raphael Weiss, Andreas Höhn, Gael Pradel, Ana Kowark, Ahmed mohamed Ibrahim, Orestis Ioannidis, Andrea Cortegiani, Maxime Leger, Emmanuel Rineau, Pierre-Yves Egreteau, Andrea Russo, Laura Kerschke, Savino Spadaro, Carole Ichai, Vincent Cottenceau, Sebastian Ziemann, Maria Gomez, Julien Nadaud, Olivier Pérus, Philippe Magazzeni, Philippe Montravers, Deniz Karakaya, Christophe Aveline, Alexander Bentley, Tulay Ozkan Seyhan, Jean-François Pittet, Sébastien Ponsonnard, Pierre Garcon, Ana Serrano, Gulay Ok, Pierre Vautier, Jean François Gautier, Sergi Sabaté, Yusuf Tunali, Valérie Cerro, Stephanie Suria, Khaschayar Saadat-Gilani, Hichem Makhloufi, Anis Cherak, Lamine Lakhel Ghanem, Zohier Gouaglia, Dina Nasrine Guadouri, Fayrouz Naouel Hama, Mustafa Kara, Omayma Saadi, Rachida Sakhraoui, Fadila Bourou, Abdelhadi Cherifi, Rahmoune Ghania Sadaoui, Amel Ouyahia, Ilhem Ouahab, Souad Bouaoud, Meriem Abdoun, Anisse Tidjane, Benali Tabeti, Nabil Boudjenan-Serradj, Carlos Jose Pérez Rivera, Paulo Cabrer, Julián Corso, Juan Pablo García, Sharon Idarraga, Christopher Montoya, Rafael Figueroa, Eduar Aldana, María Alejandra Torrado, Zheng-min Ma, Yu-fan Yang, Ya-juan Zhu, Peter Sklienka, Michal Frelich, Vojtech Jarkulis, Pavel Sevcik, Vojtech Vodicka, Mohamed Gamal Elbahnasawy, Shady Elsalhawy, Sara Motawea, Zeinab Othman, Mohamed Sahma, Ahmed Mahmoud Nafea, Nermin Ahmed, Doaa Ali Attia, Moataz Maher Emara, Mohamed Mamdouh Bonna, Mohamed Ahmed Gabr, Amany Ismail Tarbay, Ibrahim Abdelmonaem Abdehaleem, Esraa Elsayed Mohamed, Amr Mahmoud Eldeeb, Ahmed Mohamed Abbas, John Ashraf Magdy, Zyad Hassan Hamed, Hany Mostafa Esmaeil Osman, Mostafa Samy Abbas, Oliver Joannes-Boyau, Nicolas Barraud, Corentin Berthelot, Thibault Camus, Anissa Dahmi, Mylène Defaye, Sébastien Derville, Younes El-Boustani, Elsa Deloge, Hélène Jacob, Simon Monziols, Fred Priem, Jean-Jacques Robin, Vincent Legros, Therry Floch, Salvatore Muccio, Claire Geneve, Marie Lim Legouge, Stéphanie Tao Mauny, Willy Mfam, Léa Pascot, Mireille Chartier, Benjamin Duteurtre, Aidren Le Cousin, Nathalie Begel, Claire-Annissa Chekirine, Vincent Derlon, Elodie Grein, Marie-Annick Lehair, Laurent Magazzeni, Carsten Potter, Catherine Roth, Florence Voivret, Jamil Elmawieh, Annabelle Stoclin, Cédric Cirenei, Gregoire Andrieu, Sven Couloumy, Jeremy Falcone, Marion Fajardy, Arsène Gagneuil, Emeline Girardet, Agnès Mazereeuw, Mélanie Bertel, Simon Bocher, Vanessa Carn, Lenaïg Le Guen, Guillaume Le Loup, Montaine Lefevre, Amanita Diop, Vanessa Jean-Michel, Sylvie Devlieger, Juliette Duthoit, Mohamed El Kadiri, Viviane Cassisa, Charline Masson, Pierre Verrier, Axel Coquerel, Enora Atchade, Charles-Edouard Rochon, Céline Delerue, Vidal Quentin, Vanessa Latry, Nina Queixalos, Thierry Braun, Saad Bouzoubaa, Basile Christ, Audrey Geiger, Joachim Gomille, Vianney Kieffer, Simone Mangeant, Christelle Prochilo, Christian Schmitt, Stefan Skwirba, Hubert Grand, Frédérique Boury, Nicolas Mayeur, Marie Pasquie, Vincent Bruckert, Vincent Arnould, Mona Bonciu, Thibault Chapelle, Luc Facchino, Florence Fagot-Gandet, Andrea Iachim, Elena Mannu, Rémi Plattier, Romain Rozier, Michel Boudinaud, Marie-Hélène Hausermann, My Hue Nguyen, Andersen Ramorasata, Amélie Barreau, Anne-Hélène Boivin, Céline Ravry, Nicolas Mottard, Johanne Beuvelot, Florence Prunier Bossion, Christian Dörr, Thilo Caspar von Groote, Linda Grüßer, Pia Wittig, Timo Brandenburger, Thomas Dimski, Niklas Döhmen, Laura Huthmann, Daniela Kaierle, Claude Pelletier, Manon Schleß, Sebastian Cleophas, Stephanie Haunhorst, Marina Jansen, Alexandra Schmitt, Julia Soisch, Kilian Sturm, Peter Rosenberger, Alexander Bendig, Lena Flohr, Helene Häberle, Pascal Hofmann, Jonathan Kuhle, Nora Michaela Leser, Kathrin Pfister, Stefanie Prohaska, Franziska Sennholz, Lena Stetz, Kathrin Weber, Sebastian Stehr, Stephan Klaus, Marco Sadlo, Matthias Boschin, Christian Sengelhoff, Ulrich Michael Göbel, Jan Gerrit Haaker, Carina-Kristin Göttker, Matthias Gründel, Romina Baumgärtel, Astrid Berggren, Madeleine Gülzow, Lennart Muras, Hauke Paarmann, Serge Thal, Dschamil El-Masri, Eleni Arnaoutoglou, Maria Ntalouka, Paula Stratigopoulou, Anastasia Analytis, Efthymios Mavrommatis, Petros Tzimas, Agathi Karakosta, Danai Pantazi, Antonia Dimakopoulou, Katerina Dimitropoulou, Humam Jalaawiy, Aeshah Anwar, Hashim Talib Hashim, Hogir Imad Rasheed Aldawoody, Giulia Catalisano, Gilia Ingoglia, Mariachiara Ippolito, Silvia De Rosa, Lucia Cattin, Andrea Bianchin, Marisa Barone, Gianluca Paternoster, Salvatore Lucio Cutuli, Liliana Sollazzi, Laura Cascarano, Massimo Antonelli, Paola Aceto, Bruno Romanò, Vincenzo Francesco Tripodi, Rosamaria Scappatura, Maria Cristina Vadalà, Diego Fiume, Maria Teresa Strano, Giulia Oddo, Clemente Santorsola, Bilal Abu Hussain, Adnan Raed Alnaser, Anas Hassouneh Ghassan, Khaled Hasanein, Mohammed Theab, Seokyung Shin, Seungho Jung, Kyuho Lee, Sung Mee Jung, Jongyoon Baek, Muhammed K. Elhadi, Issa Abuzeid, Mohammed Albaraesi, Sarah Aldressi, Wegdan Khalel, Eman Abdulwahed, Akram Abdulhamid Ashur Abujrad, Amer Almaghrabi, Muhand Mohammed Alteleeb, Entisar Ahmed Ali Alshareea, Marwa Isa Biala, Abdulqudus Deeknah, Dooua Ali Gheddim, Reem Ghmagh, Nawras Salih Ali AbuIkhrays, Marwa Sinan, Enas Soula, Sumayyah Ghayth Bahroun, Khawla Derwish, Aya Munir Mohamed, Eman Sayed Younes, Rayet Al Islam Benjouira, Mohamed Aliwa, Najwa Abdullah Altashani, Mohammed Omar Alteb, Ahmed Msherghi, Fatima Alagelli, Sufyan Albarouni, Ahmed Albishti, Sarah Aljamal, Mohamed Alsori, Taha Ekhuja, Suha Elzwai, Mohammed Ghula, Tahani Mustafa, Ahmed Tuwaib, Haifa Zriba, Hamza Mahmoud Agilla, Toky Andriamahefa Rafanomezantsoa, Anne Marie Camilleri Podesta, Denise Mifsud Bonnici, Tiziana Pirotta, Gilberto Adrián Gasca López, Maja Mojsova Mijovska, Tatjana Davitkovska, Aleksandra Gavrilovska, Sanja Lukikj, Marija Vesova, Dina Zafirova, Sarah Amro, Baraa N. F. Hajjaj, Muawia Alkhazendar, Yousuf Barakat, Sewar Abdulaziz Elejla, Ahmed Elhissi, Ahmed Khader, Ali Salem, Rita de Freitas Regufe, André Filipe de Oliveira Eloy, Lisbete Marisa Neto Cordeiro Perdigão, Evgeny Grigoriev, Artem Ivkin, Roman Kornelyuk, Michael Yaroustovsky, Marina Abramyan, Ekaterina Komardina, Nataliya Lesteva, Medina Aybazova, Elmira Kumykova, Svetlana Lesina, Gennady Rybakov, Alexey Shestov, Abdulnaser Ahmad Ahmad Barmou, Bushra Lotfi Altayeb Ahmed, Aisha Mohammad Eliyas, Yousra Emadeldin, Alexander Kaserer, Clara Castellucci, Julian Rössler, Samira Akbas, Andreja Möller Petrun, Irena Gregorcic, Vesna Sok, Roman Čičak, Elizabeth Bárcena, Antonio Guisado, Ismail Wi, Javier Ripollés Melchor, Ángel Becerra-Bolaños, Sergio Cabrera-Doreste, Ancor Domínguez-Arbelo, María Candelaria Delgado-Alonso, Virginia Muiño-Palomar, Aurelio Rodríguez-Pérez, Javier Mata Estévez, Maria Begona Covas Munoz, Juan Mulet Matas, Sara Perez Palao, Maria Dolores Mira Quirós, Alisia Cezara Teslev, Mercedes Garcia Alvarez, Marga Argilaga, María Campos, Albert Bainac, Astrid Batalla, Marta Giné, Gracia Herránz, Ignacio Hinojal, Margarita Logroño Ejea, Noelia de la Rosa Ruiz, María Gastaca Abasolo, Carla Rosario Houhton Acuna, Ibai Iriarte Zaranton, Ana Mendigurenmurua, María José Munoz Sanz, Erika Olea de la Fuente, María Pilar Pérez Vaquero, Ana Soto Iglesias, Ana Ugarte Mieres, Alaitz Urtiaga Urrestizala, Lourdes Ferreira, Félix Lobato, Marta Aguado Sevilla, Andres Erazo, Pere Miró, Diana Vernetta, Berta Castellano Paulis, Anabel Adell Perez, Marta Aseguinolaza Pagola, Elena delVal Peciña, Ainhoa Garmendia Odriozola, Amaia Lopetegi Aizpurua, Olatz Pavón Piquer, Pilar Plou Garcia, Paula Ortega Rezola, Antia Osorio Lopez, Isabel de la Calle Gil, Rosalía Navarro Casado, Peter Adamove, Roser Bayona Domenge, Francho Miguel Blasco Blasco, Adriana Alexandra Rueda Villamizar, Maria Antonia Perelló Llaneras, Jose Ignacio García-Sánchez, Laura Fernandez Téllez, Sara García Zamorano, Natalia Gijón Herreros, Andrea Rodriguez Esteve, Pablo Monedero Rodríguez, Isabel García Trigo, Agustín Alcaraz, Andrea Lara Jiménez, Iñigo Rubio, Nuria García, Raquel Callejas, Angel Manuel Candela Toha, Eli Claros, Pilar Cobeta, Pascual Crespo, Trini Dorado, Elena Elías, Javier Felices, Diego Gil, Nuria Mané, Adolfo Martínez, Lucía Pereira, Alberto Balvis Noemí Samaranch, Carlos Tiscar, Judith VillaHoz, Patricia Galán Menéndez, Elena Cardona, Anna Conesa, Veronica Estepa, Laura Llinares Espí, Yuri Loaiza Aldeán, Susana Manrique, Víctor Morales Ariza, Laura Villarino Villa, Elfayadh Saidahmed Mohamed Amed Suliman, Hytham Hamid, Modather Mohamed Saeed, Orhan Sungur Mukadder, Demet Altun, Nur Canbolat, Müşerref Beril Dinçer, Serap Aktaş Yıldırım, Müzeyyen İyigün, Davut Yapıcı, Levent Özdemir, Aslinur Sagun, Neval Boztug, Yesim Cetintas, Bora Dinc, Emel Gündüz, Hakkı Ünlügenç, Demet Lafli Tunay, Ozgur Komurcu, Özlem Korkmaz Dilmen, Eren Fatma Akcil, Eda Tok Alsina, Özge Hakli, Cengiz Polat, Namigar Turgut, Nurcan Kızılcık, Özge Köner, Öznur Şen, Nurdan Aydin, Burcu Basaran, Emre Sertac Bingul, Kamil Darcin, Semra Ugur, Kemal Tolga Saracoglu, Asli Demir, Özgök Aysegül, Eda Balci, Behic Girgin, Aygun Guler, Ümit Karadeniz, Nihal Özaslan, Yigit Özay Hülya, Namik Ozcan, Aysun Postaci, Mehmet Sahap, Nevriye Salman, Özlem Sağır, Bulent Atik, Murat Bicakcioglu, Hafize Fisun Demir, Ugün Fatih, Nazan Kocaoglu, Hüseyin ilksen Toprak, Duygu Demiröz Aslan, Yusuf Ziya Colak, Mustafa Soner Ozcan, Mehmet Yilmaz, Umran Karaca, Sevtap Hekimoglu Sahin, Özlem Ersoy Karka, Gizem Demir Şenoğlu, Süheyla Erkoç Karadağ, Neslihan Alkis, Volkan Baytaş, Engin Erturk, Ali Akdogan, Ahmet Besir, Dilek Kutanis, Sedat Saylan, Ersagun Tugcugil, Pinar Ayvat, Berrin Günaydın, Beyza Mehri Büyükgebiz, Omer Faruk Boran, Feyza Calisir, Yavuz Orak, Bahar Kuvaki Balkan, Sibel Büyükcoban, Erol Gökel, Sakize Ferim Günenc, Sule Özbilgin, Suna Göre, Selcan Akesen, Seda Cansabuncu, Natalia Momot, Anna Panchenko, and Kristen Rutledge

Subjects
Medicine
Abstract

Introduction More than 300 million surgical procedures are performed each year. Acute kidney injury (AKI) is a common complication after major surgery and is associated with adverse short-term and long-term outcomes. However, there is a large variation in the incidence of reported AKI rates. The establishment of an accurate epidemiology of surgery-associated AKI is important for healthcare policy, quality initiatives, clinical trials, as well as for improving guidelines. The objective of the Epidemiology of Surgery-associated Acute Kidney Injury (EPIS-AKI) trial is to prospectively evaluate the epidemiology of AKI after major surgery using the latest Kidney Disease: Improving Global Outcomes (KDIGO) consensus definition of AKI.Methods and analysis EPIS-AKI is an international prospective, observational, multicentre cohort study including 10 000 patients undergoing major surgery who are subsequently admitted to the ICU or a similar high dependency unit. The primary endpoint is the incidence of AKI within 72 hours after surgery according to the KDIGO criteria. Secondary endpoints include use of renal replacement therapy (RRT), mortality during ICU and hospital stay, length of ICU and hospital stay and major adverse kidney events (combined endpoint consisting of persistent renal dysfunction, RRT and mortality) at day 90. Further, we will evaluate preoperative and intraoperative risk factors affecting the incidence of postoperative AKI. In an add-on analysis, we will assess urinary biomarkers for early detection of AKI.Ethics and dissemination EPIS-AKI has been approved by the leading Ethics Committee of the Medical Council North Rhine-Westphalia, of the Westphalian Wilhelms-University Münster and the corresponding Ethics Committee at each participating site. Results will be disseminated widely and published in peer-reviewed journals, presented at conferences and used to design further AKI-related trials.Trial registration number NCT04165369.

Published
2021
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3. EPIdemiology of Surgery-Associated Acute Kidney Injury (EPIS-AKI): study protocol for a multicentre, observational trial

Author

Weiss, Raphael, Saadat-Gilani, Khaschayar, Kerschke, Laura, Wempe, Carola, Meersch, Melanie, Zarbock, Alexander Hichem Makhloufi, Anis, Cherak, Lamine Lakhel Ghanem, Zohier, Gouaglia, Dina Nasrine Guadouri, Fayrouz Naouel Hama, Mustafa, Kara, Omayma, Saadi, Rachida, Sakhraoui, Fadila, Bourou, Abdelhadi, Cherifi, Rahmoune Ghania Sadaoui, Amel, Ouyahia, Ilhem, Ouahab, Souad, Bouaoud, Meriem, Abdoun, Anisse, Tidjane, Benali, Tabeti, Nabil, Boudjenan-Serradj, Carlos Jose Pérez Rivera, Paulo, Cabrer, Julián, Corso, Juan Pablo García, Sharon, Idarraga, Christopher, Montoya, Rafael, Figueroa, Eduar, Aldana, María Alejandra Torrado, Peng, Ke, Zheng-Min, Ma, Yu-Fan, Yang, Ya-Juan, Zhu, Peter, Sklienka, Michal, Frelich, Vojtech, Jarkulis, Pavel, Sevcik, Vojtech, Vodicka, Mohamed Gamal Elbahnasawy, Shady, Elsalhawy, Sara, Motawea, Zeinab, Othman, Mohamed, Sahma, Ahmed Mahmoud Nafea, Nermin, Ahmed, Doaa Ali Attia, Moataz Maher Emara, Mohamed Mamdouh Bonna, Mohamed Ahmed Gabr, Amany Ismail Tarbay, Ibrahim Abdelmonaem Abdehaleem, Esraa Elsayed Mohamed, Amr Mahmoud Eldeeb, Ahmed Mohamed Abbas, John Ashraf Magdy, Zyad Hassan Hamed, Hany Mostafa Esmaeil Osman, Mostafa Samy Abbas, Oliver, Joannes-Boyau, Nicolas, Barraud, Corentin, Berthelot, Thibault, Camus, Anissa, Dahmi, Mylène, Defaye, Sébastien, Derville, Younes, El-Boustani, Elsa, Deloge, Hélène, Jacob, Simon, Monziols, Fred, Priem, Jean-Jacques, Robin, Vincent, Legros, Therry, Floch, Salvatore, Muccio, Claire, Geneve, Marie Lim Legouge, Stéphanie Tao Mauny, Willy, Mfam, Léa, Pascot, Christophe, Aveline, Mireille, Chartier, Benjamin, Duteurtre, Jean Francois Gautier, Aidren Le Cousin, Pierre, Vautier, Julien, Nadaud, Nathalie, Begel, Claire-Annissa, Chekirine, Vincent, Derlon, Elodie, Grein, Marie-Annick, Lehair, Laurent, Magazzeni, Philippe, Magazzeni, Carsten, Potter, Catherine, Roth, Florence, Voivret, Thomas, Rimmelé, Valérie, Cerro, Stéphanie, Suria, Jamil, Elmawieh, Annabelle, Stoclin, Cédric, Cirenei, Gregoire, Andrieu, Sven, Couloumy, Jeremy, Falcone, Marion, Fajardy, Arsène, Gagneuil, Emeline, Girardet, Agnès, Mazereeuw, Sébastien, Ponsonnard, Pierre-Yves, Egreteau, Mélanie, Bertel, Simon, Bocher, Vanessa, Carn, Lenaïg Le Guen, Guillaume Le Loup, Montaine, Lefevre, Carole, Ichai, Amanita, Diop, Vanessa, Jean-Michel, Sylvie, Devlieger, Juliette, Duthoit, Mohamed El Kadiri, Maxime, Léger, Viviane, Cassisa, Sigismond, Lasocki, Charline, Masson, Emmanuel, Rineau, Pierre, Verrier, Axel, Coquerel, Philippe, Montravers, Enora, Atchade, Charles-Edouard, Rochon, Céline, Delerue, Vidal, Quentin, Vanessa, Latry, Nina, Queixalos, Vincent, Cottenceau, Thierry, Braun, Saad, Bouzoubaa, Basile, Christ, Audrey, Geiger, Joachim, Gomille, Vianney, Kieffer, Simone, Mangeant, Christelle, Prochilo, Christian, Schmitt, Stefan, Skwirba, Hubert, Grand, Frédérique, Boury, Nicolas, Mayeur, Marie, Pasquie, Pierre, Garçon, Vincent, Bruckert, Vincent, Arnould, Mona, Bonciu, Thibault, Chapelle, Luc, Facchino, Florence, Fagot-Gandet, Andrea, Iachim, Elena, Mannu, Olivier, Perus, Rémi, Plattier, Romain, Rozier, Gaël, Pradel, Michel, Boudinaud, Marie-Hélène, Hausermann, My Hue Nguyen, Andersen, Ramorasata, Amélie, Barreau, Anne-Hélène, Boivin, Céline, Ravry, Nicolas, Mottard, Johanne, Beuvelot, Florence Prunier Bossion, Olivier, Desebbe, Alexander, Zarbock, Christian, Dörr, Thilo Caspar von Groote, Mira, Küllmar, Christina, Massoth, Melanie, Meersch, Khaschayar, Saadat-Gilani, Raphael, Weiss, Carola, Wempe, Sebastian, Ziemann, Linda, Grüßer, Ana, Kowark, Pia, Wittig, Timo, Brandenburger, Thomas, Dimski, Niklas, Döhmen, Laura, Huthmann, Daniela, Kaierle, Claude, Pelletier, Manon, Schleß, Andreas, Hohn, Sebastian, Cleophas, Stephanie, Haunhorst, Marina, Jansen, Alexandra, Schmitt, Julia, Soisch, Kilian, Sturm, Peter, Rosenberger, Alexander, Bendig, Lena, Flohr, Helene, Häberle, Pascal, Hofmann, Jonathan, Kuhle, Nora Michaela Leser, Kathrin, Pfister, Stefanie, Prohaska, Franziska, Sennholz, Lena, Stetz, Kathrin, Weber, Sebastian, Stehr, Stephan, Klaus, Marco, Sadlo, Matthias, Boschin, Christian, Sengelhoff, Ulrich Michael Göbel, Jan Gerrit Haaker, Carina-Kristin, Göttker, Matthias, Gründel, Matthias, Heringlake, Romina, Baumgärtel, Astrid, Berggren, Madeleine, Gülzow, Lennart, Muras, Hauke, Paarmann, Serge, Thal, Alexander, Bentley, Dschamil, El-Masri, Anne, Sebastiani, Eleni, Arnaoutoglou, Maria, Ntalouka, Paula, Stratigopoulou, Anastasia, Analytis, Efthymios, Mavrommatis, Petros, Tzimas, Agathi, Karakosta, Danai, Pantazi, Antonia, Dimakopoulou, Katerina, Dimitropoulou, Orestis, Ioannidis, Humam, Jalaawiy, Aeshah, Anwar, Hashim Talib Hashim, Hogir Imad Rasheed Aldawoody, Andrea, Cortegiani, Giulia, Catalisano, Gilia, Ingoglia, Mariachiara, Ippolito, De Rosa, Silvia, Lucia, Cattin, Andrea, Bianchin, Marisa, Barone, Gianluca, Paternoster, Salvatore Lucio Cutuli, Andrea, Russo, Liliana, Sollazzi, Laura, Cascarano, Massimo, Antonelli, Paola, Aceto, Bruno, Romanò, Savino, Spadaro, Vincenzo Francesco Tripodi, Michele, Rossi, Rosamaria, Scappatura, Maria Cristina Vadalà, Diego, Fiume, Maria Teresa Strano, Giulia, Oddo, Clemente, Santorsola, Bilal Abu Hussain, Adnan Raed Alnaser, Anas Hassouneh Ghassan, Khaled, Hasanein, Mohammed, Theab, Seokyung, Shin, Seungho, Jung, Kyuho, Lee, Sung Mee Jung, Jongyoon, Baek, Muhammed, K Elhadi, Issa, Abuzeid, Mohammed, Albaraesi, Sarah, Aldressi, Wegdan, Khalel, Eman, Abdulwahed, Akram Abdulhamid Ashur Abujrad, Amer, Almaghrabi, Muhand Mohammed Alteleeb, Entisar Ahmed Ali Alshareea, Marwa Isa Biala, Abdulqudus, Deeknah, Dooua Ali Gheddim, Reem, Ghmagh, Nawras Salih Ali AbuIkhrays, Marwa, Sinan, Enas, Soula, Sumayyah Ghayth Bahroun, Khawla, Derwish, Aya Munir Mohamed, Eman Sayed Younes, Rayet Al Islam Benjouira, Mohamed, Aliwa, Najwa Abdullah Altashani, Mohammed Omar Alteb, Ahmed, Msherghi, Fatima, Alagelli, Sufyan, Albarouni, Ahmed, Albishti, Sarah, Aljamal, Mohamed, Alsori, Taha, Ekhuja, Suha, Elzwai, Mohammed, Ghula, Tahani, Mustafa, Ahmed, Tuwaib, Haifa, Zriba, Hamza Mahmoud Agilla, Toky Andriamahefa Rafanomezantsoa, Anne Marie Camilleri Podesta, Denise Mifsud Bonnici, Tiziana, Pirotta, Gilberto Adrián Gasca López, Maja Mojsova Mijovska, Tatjana, Davitkovska, Aleksandra, Gavrilovska, Sanja, Lukikj, Marija, Vesova, Dina, Zafirova, Sarah, Amro, Baraa N, F Hajjaj, Muawia, Alkhazendar, Yousuf, Barakat, Sewar Abdulaziz Elejla, Ahmed, Elhissi, Ahmed, Khader, Ali, Salem, Rita de Freitas Regufe, André Filipe de Oliveira Eloy, Lisbete Marisa Neto Cordeiro Perdigão, Evgeny, Grigoriev, Artem, Ivkin, Roman, Kornelyuk, Michael, Yaroustovsky, Marina, Abramyan, Ekaterina, Komardina, Nataliya, Lesteva, Medina, Aybazova, Elmira, Kumykova, Svetlana, Lesina, Gennady, Rybakov, Alexey, Shestov, Abdulnaser Ahmad Ahmad Barmou, Bushra Lotfi Altayeb Ahmed, Aisha Mohammad Eliyas, Yousra, Emadeldin, Alexander, Kaserer, Clara, Castellucci, Julian, Rössler, Samira, Akbas, Andreja Möller Petrun, Irena, Gregorcic, Vesna, Sok, Roman, Čičak, Elizabeth, Bárcena, Antonio, Guisado, Ismail, Wi, Javier Ripollés Melchor, Ángel, Becerra-Bolaños, Sergio, Cabrera-Doreste, Ancor, Domínguez-Arbelo, María Candelaria Delgado-Alonso, Virginia, Muiño-Palomar, Aurelio, Rodríguez-Pérez, Javier Mata Estévez, Maria Begona Covas Munoz, Juan Mulet Matas, Sara Perez Palao, Maria Dolores Mira Quirós, Alisia Cezara Teslev, Mercedes Garcia Alvarez, Marga, Argilaga, María, Campos, Albert, Bainac, Astrid, Batalla, Marta, Giné, Gracia, Herránz, Ignacio, Hinojal, Margarita Logroño Ejea, Noelia de la Rosa Ruiz, María Gastaca Abasolo, Carla Rosario Houhton Acuna, Ibai Iriarte Zaranton, Ana, Mendigurenmurua, María José Munoz Sanz, Erika Olea de la Fuente, María Pilar Pérez Vaquero, Ana Soto Iglesias, Ana Ugarte Mieres, Alaitz Urtiaga Urrestizala, Lourdes, Ferreira, Félix, Lobato, Marta Aguado Sevilla, Andres, Erazo, Pere, Miró, Sergi, Sabaté, Diana, Vernetta, Berta Castellano Paulis, Anabel Adell Perez, Marta Aseguinolaza Pagola, Elena delVal Peciña, Ainhoa Garmendia Odriozola, Amaia Lopetegi Aizpurua, Olatz Pavón Piquer, Pilar Plou Garcia, Paula Ortega Rezola, Antia Osorio Lopez, Isabel de la Calle Gil, Rosalía Navarro Casado, Peter, Adamove, Roser Bayona Domenge, Francho Miguel Blasco Blasco, Adriana Alexandra Rueda Villamizar, Maria Antonia Perelló Llaneras, Jose Ignacio García-Sánchez, Laura Fernandez Téllez, Sara García Zamorano, Natalia Gijón Herreros, Andrea Rodriguez Esteve, Pablo Monedero Rodríguez, Isabel García Trigo, Agustín, Alcaraz, Andrea Lara Jiménez, Iñigo, Rubio, Nuria, García, Raquel, Callejas, Angel Manuel Candela Toha, Eli, Claros, Pilar, Cobeta, Pascual, Crespo, Trini, Dorado, Elena, Elías, Javier, Felices, Diego, Gil, María, Gómez, Nuria, Mané, María, Martín, Adolfo, Martínez, Lucía, Pereira, Alberto Balvis Noemí Samaranch, Ana, Serrano, Carlos, Tiscar, Judith, Villahoz, Patricia Galán Menéndez, Elena, Cardona, Anna, Conesa, Veronica, Estepa, Patricia, Galán, Laura Llinares Espí, Yuri Loaiza Aldeán, Susana, Manrique, Víctor Morales Ariza, Laura Villarino Villa, Elfayadh Saidahmed Mohamed Amed Suliman, Hytham, Hamid, Ahmed Mohamed Ibrahim, Modather Mohamed Saeed, Orhan Sungur Mukadder, Demet, Altun, Nur, Canbolat, Müşerref Beril Dinçer, Tulay Özkan Seyhan, Serap Aktaş Yıldırım, Müzeyyen, İyigün, Davut, Yapıcı, Levent, Özdemir, Aslinur, Sagun, Neval, Boztug, Yesim, Cetintas, Bora, Dinc, Emel, Gündüz, Hakkı, Ünlügenç, Demet Lafli Tunay, Deniz, Karakaya, Burhan, Dost, Ozgur, Komurcu, Özlem Korkmaz Dilmen, Eren Fatma Akcil, Yusuf, Tunali, Gülay, Ok, Eda Tok Alsina, Özge, Hakli, Cengiz, Polat, Namigar, Turgut, Nurcan, Kızılcık, Özge, Köner, Öznur, Şen, Nurdan, Aydin, Burcu, Basaran, Emre Sertac Bingul, Yavuz, Gürkan, Kamil, Darcin, Semra, Ugur, Kemal Tolga Saracoglu, Asli, Demir, Özgök, Aysegül, Eda, Balci, Behic, Girgin, Aygun, Guler, Ümit, Karadeniz, Nihal, Özaslan, Yigit Özay Hülya, Namik, Ozcan, Aysun, Postaci, Mehmet, Sahap, Nevriye, Salman, Özlem, Sağır, Bulent, Atik, Murat, Bicakcioglu, Hafize Fisun Demir, Ugün, Fatih, Nazan, Kocaoglu, Hüseyin Ilksen Toprak, Duygu Demiröz Aslan, Yusuf Ziya Colak, Mustafa Soner Ozcan, Mehmet, Yilmaz, Umran, Karaca, Sevtap Hekimoglu Sahin, Özlem Ersoy Karka, Gizem Demir Şenoğlu, Süheyla Erkoç Karadağ, Neslihan, Alkis, Volkan, Baytaş, Engin, Erturk, Ali, Akdogan, Ahmet, Besir, Dilek, Kutanis, Sedat, Saylan, Ersagun, Tugcugil, Pinar, Ayvat, Berrin, Günaydın, Beyza Mehri Büyükgebiz, Omer Faruk Boran, Feyza, Calisir, Yavuz, Orak, Bahar Kuvaki Balkan, Sibel, Büyükcoban, Erol, Gökel, Sakize Ferim Günenc, Sule, Özbilgin, Suna, Göre, Selcan, Akesen, Seda, Cansabuncu, Natalia, Momot, Anna, Panchenko, Jean-Francois, Pittet, Kristen, Rutledge, Tıp Fakültesi, Weiss, R, Saadat-Gilani, K, Kerschke,L, Wempe,C, Meersch, M, Zarbock, A, Cortegiani, A, and Ippolito, M

Subjects
Epidemiology, urologic and male genital diseases, acute renal failure, Adult Intensive & Critical Care, Anaesthesia, Cohort Studies, surgery, chronic renal failure, Humans, Multicenter Studies as Topic, Prospective Studies, adult intensive & critical care, urogenital system, Incidence, General Medicine, Acute Kidney Injury, female genital diseases and pregnancy complications, critical care, Renal Replacement Therapy, Observational Studies as Topic, epidemiology, Acute Renal Failure, Surgery, adult intensive &amp, Chronic Renal Failure
Abstract

Sağır, Özlem (Balikesir Author), Introduction More than 300 million surgical procedures are performed each year. Acute kidney injury (AKI) is a common complication after major surgery and is associated with adverse short-term and long-term outcomes. However, there is a large variation in the incidence of reported AKI rates. The establishment of an accurate epidemiology of surgery-associated AKI is important for healthcare policy, quality initiatives, clinical trials, as well as for improving guidelines. The objective of the Epidemiology of Surgery-associated Acute Kidney Injury (EPIS-AKI) trial is to prospectively evaluate the epidemiology of AKI after major surgery using the latest Kidney Disease: Improving Global Outcomes (KDIGO) consensus definition of AKI. Methods and analysis EPIS-AKI is an international prospective, observational, multicentre cohort study including 10 000 patients undergoing major surgery who are subsequently admitted to the ICU or a similar high dependency unit. The primary endpoint is the incidence of AKI within 72 hours after surgery according to the KDIGO criteria. Secondary endpoints include use of renal replacement therapy (RRT), mortality during ICU and hospital stay, length of ICU and hospital stay and major adverse kidney events (combined endpoint consisting of persistent renal dysfunction, RRT and mortality) at day 90. Further, we will evaluate preoperative and intraoperative risk factors affecting the incidence of postoperative AKI. In an add-on analysis, we will assess urinary biomarkers for early detection of AKI. Ethics and dissemination EPIS-AKI has been approved by the leading Ethics Committee of the Medical Council North Rhine-Westphalia, of the Westphalian Wilhelms-University Münster and the corresponding Ethics Committee at each participating site. Results will be disseminated widely and published in peer-reviewed journals, presented at conferences and used to design further AKI-related trials. Trial registration number NCT04165369. ©

Published
2021

4. Risk factors for Coronavirus Disease 2019 (COVID-19) severity and mortality among solid cancer patients and impact of the disease on anticancer treatment: A French nationwide cohort study (GCO-002 CACOVID-19)

Author

Astrid Lièvre, Anthony Turpin, Isabelle Ray-Coquard, Karine Le Malicot, Juliette Thariat, Guido Ahle, Cindy Neuzillet, Xavier Paoletti, Olivier Bouché, Kais Aldabbagh, Pierre Michel, Didier Debieuvre, Anthony Canellas, Marie Wislez, Lucie Laurent, May Mabro, Raphael Colle, Anne-Claire Hardy-Bessard, Laura Mansi, Emeline Colomba, Jean Bourhis, Philippe Gorphe, Yoann Pointreau, Ahmed Idbaih, Renata Ursu, Anna Luisa Di Stefano, Gérard Zalcman, Thomas Aparicio, Solenne Moulin, Olivier Leleu, Sylvie Leparree, Henri Goasdoue, Christine Piprot, Gerald Tourneur, Vincent Bayart, Delphine Lignier, Emma Lachaier, Marwa Khamari, Alexandre Coutte, Nicolas Siembida, Aline Houessinon, Jean Marc Regimbeau, Bruno Chauffert, Aurélie Moreira, Vincent Hautefeuille, Christine Hee, Mathieu Boone, Céline Bihan, Emilie Chive, Stéphane Poulet-Potriquier, Rachida Fahem, Dominique Luet, Guillaume Roquin, Carole Vitellius, Nathanaëlle Cornet-Trichereau, François-Xavier Caroli-Bosc, Anne Thirot-Bidault, Stanislas Ropert, Julie Gachet - Masson, Mélanie Dehais, Gwen-Ael L'helgoualc'h, Ibrahim Ali-Mahamadou, Safia Talfi, Laure Belmont, Dieudonné Kilendo, Nasro Benrezzak, Emeline Dubief, Guillaume Conroy, Laurence Delique, Maud Basso, Isabelle Pons, Karine Salignon, Anne-Laure Villing, Emmanuelle Mougenot, Cassandra Porebski, Asma Guiatni, Nicolas Cloarec, Laurent Mineur, Marie Bouchaud, Céleste David, Annie Peytier, Thomas Greletty, Franck Audemar, Emanuelle Vignes, Floriane Minne, Guillaume Goldzak, Fabienne Huysman, Fayçal Hocine, Zaher Lakkis, Guillaume Meynard, Hamadi Almotlak, Elodie Klajer, Xu-Shan Sun, Julie Wasselin, Pascale Catala, Claire Mazuy, Hélène Vandamme, Jean-Briac Prevost, Aurélie Fadin, Laurent Basson, Jean-Baptiste Huguet, Emmanuelle Dos Santos, Bérangère Jany, Alain Saad, Frédéric Goutorbe, Eric Oziol, Mohamed Ramdani, Ouafae Kadiri, Delphine Garbay, Clotilde Huet, Etienne Giroux Leprieur, Wen Teng, Justine Monvoisin, Patrick Arnaud Coffin, Sylvie Roux, Hubert Orfeuvre, Mélanie Chagros, Didier Pillon, Agathe Rassoul, Pierre Guillaume Poureau, Cécile Novello, François Ducray, Cécile Trouba, Vianney Bastit, Emmanuel Babin, Vincent Leon, Anne-Catherine Courtecuisse, Julie Vambre, Vincent Tack, Christophe Desauw, Fatima Meniai, Christina Peres, Aurélie Esparcieux, Hervé Perrier, Nathalie Doux, Régis Kaphan, Bertrand Roques, Christine Rebischung, Dominique Mille, Gaëlle Fernandes, Naceur Abdelli, Natacha Jousset, Pierre Combe, Eric Jonveaux, Patrick Dumont, Marc Kanaan, Corinne Berthelot Gras, Valérie Panis, Laure Kaluzinski, Marjolène Venant-Valery, You-Heng Lam, Laura Vallee, Frédéric Riviere, Muriel Durand, Dihya Benghadid, Emilie Villeneuve, Olivia Hentic Dhome, Zedjiga Bounouar, Louis De Mestier, Jacqueline Dubois, Magali Eyriey, Lionel Moreau, Dib Baihas, Kaïs Aldabbagh, Dominique Degriffolet, Virginie Sebbagh, Jean-Christophe Seghezzi, Marion Lozach-Brugirard, Julie Mandrou, Loubna Mavier, Florence Hennetier, Jean-Philippe Wagner, Elisabeth Carola, Karthiga Chandirakumaran, Sandrine Loutski, Isabelle Cojean-Zelek, Amina Bouras, Sandrine Lacour, Fahem Froura, Hadjer Ben Nadji, Sophie Cattelain, Franck Darloy, Geneviève Jolimoy Boilleau, Cyrielle Maissiat, Ariane Darut-Jouve, Véronique Lorgis, Ikram Charifi-Alaoui, François Ghiringhelli, Antoine Drouillard, Marie Chaix, Sylvain Manfredi, Côme Lepage, Alice Gagnaire, Marianne Latournerie, Sofia jourdan, Nora Perrot, Mireille folia, Anne Minello, Jean-Louis Jouve, Marielle Fery, Alain Landau, Diane Evrard, Bruno Valenza, Jean-François Paitel, Laetitia Chablais, Thomas Kreitmann, Laurence Lancry-Lecomte, Adrien Monard, Eve Faugeras, Paul Boucheret, Cécile Glommeau, Christine Tchikladze, Claire Garnier Tixidre, Jérôme Long, Manel Zaidi, Véronique Delabarre, Juliette Meyzenc, Loïc Ferrand, Denis Moro-Sibilot, Paul Bouheret, Cécile Leyronnas, Camille Herve, Audrey Thoor, Emanuelle Jacquet, Gaël Roth, Videsheka Madapathage-Senanyake, Peggy Chupeau, Elsa Bieber, Maud Rosso, Isabelle Lepage, Frank Priou, Margot Laly, Sylvie Aprelon, Natacha Sobolak, Helen Homokos, Fabienne Watelle, Alice Pham-Becker, Géraldine Lauridant, Charlotte Dujardin, Etienne Lenglin, Aimée Nienguet Tsota, Sophie Dominguez, Alexandra Forestier, Franck Nouvel, Justine Lerooy, Céline Ratajczak, Olivier Romano, Dorothéee Brzyski, Aurélien Barriere, Dominique Genet, Julien Tisse, Xavier Zasadny, Adeline Grelet, Amélie Hennion-Imbault, Eglantine Haustraete, Samy Louafi, Manal Awad, Younes Zekri, Caroline Cheneau, Nolwen Leissen, Joëlle Egreteau, Alexandra Breant, Matthieu Sarabi, Stéphanie Labonne, Julien Forestier, Céline Leclercq, Florence Prunier-Bossion, Isabelle Ray Coquard, Marielle Guillet, Aurélie Theillaumas, Emilie Prome, Thomas Walter, Pierre Philouze, Melody Lawo, Solène De Talhouet, Johanne Beuvelot, Yann Molin, Marie Bellecoste Martin, Maud Saussereau, Lauren Agnelli, Nicolas Fakhry, Christophe Laplace, Emmanuelle Norguet Monnereau, Céline Boucard, Kahina Djenad, Catherine Fontaine, Jean-François Seitz, Laétitia Dahan, Julie Sigrand, Muriel Duluc, Christophe Locher, Marjory Fleury, Ange Brou Marie, Ramdane Berkane, Séverine Poupblanc, Dominique Auby, Daniela Petran, Patrick Texereau, Elodie Guerineau, Morgan Andre, Linda Mahjoubi, Fanny Sarrazin, Sonia Jeanson, Anthony Gschwend, Virginie Birr, Mathieu Fore, Monique Noirclerc, Sihem Dahou, Dominique Spaeth, Mélanie Lambotin, Thomas Lelu, Benjamin Linot, Nathalie Hugon, Dominique Rousseau, Hélène Castanie, Carole Lenne, Alain Lortholary, Anatole Cessot, Messaouda Merzoug, Cécile Naudin, Jean-Michel Vannetzel, Ghina Aziz, Yacine Hadj Arab, Stéphanie Pernes, Isabelle Roche-Lachaise, Frédéric Fiteni, Hadjer Yahiaoui, Gwendoline Marel Lopez, Jeanne Oddoz, Fabienne Peira, Olivier Michel, Jérôme Meunier, Brahim Ouahrani, Antoine Roger, Sonia Branco, Van Nguyen, Mathilde Gisselbrecht, Ghania Hammad, Pierre Mordant, Magda Stroksztejn, Marc Pocard, Luc Nlo Meyengue, Emmanuelle Sacco, Sophie Simon Anne, Elizabeth Fabre-Guillevin, Marine Slim, Aziz Zaanan, Jacques Cadranel, Johan Pluvy, Rénata Ursu, Amyrath Geraldo, Rime Lihi, Maryline Vo, Zohra Brouk, Raphaël Colle, Mostefa Bennamoun, Fabrice Lacan, Christophe Louvet, Soraya Mebarki, Marianne Veyri, Elena Paillaud, Christelle Lucas, Olivier Dubreuil, Jamila Lyamani, Hanane Agguini, Emilie Soularue, Clément Jourdaine, Benjamin Verillaud, Hakima Herzine, Eric Raymond, Nathalie Mathiot, Lola Jade Palmieri, Christian Epanya, Julien Taieb, Eliane Bertrand, Gaël Goujon, Céline Namour, Benoit Gazeau, Biljana Zafirova, Haitham Mirghani, Catherine Belin, Kahina Belkhir, Myriam Gharib, Aurore Vozy, Karim Amrane, Jean-Philippe Spano, Johanna Wassermann, Loic Feuvret, Jean-Baptiste Bachet, Sara Philonenko, Laetitia Guillot, Marion Zabbe, Stéphanie Gibiat, Camille Baylot, Aude Jouinot, Nicolas Leduc, Sabine Vieillot, Laurie James, Camille Ducerf, Jean-Frédéric Blanc, Claire Falandry Leger, Virginie Wautot, Marion Chauvenet, Aude Vincent, David Tougeron, Sandrine Goulvent, Etienne Suc, Anne-Pascale Laurenty, Eric Marquis, Margaux Bonnaire, Maxime Dewolf, Esteban Brenet, Delphine Billard, Claude-Fabien Litre, Antoine Dumazet, Damien Botsen, Marion Vazel, Claire Carlier, David Bonnerave, Charles Marchand-Crety, Olivier Bouche, Patricia Fosse, David Sefrioui, Sarah Watson, Fatah Torche, Thierry Muron, Stéphane Natur, Romain Desgrippes, Véronique Bihel, François-Régis Ferrand, Caroline Leiterer, Julie Lavole, Claire Moquet, Nathalie Pressoir, Catherine Dziukala, Catherine Ligeza Poisson, Abdelhalim Naji, Nicolas Williet, Jean-Marc Phelip, Fabrice Di Palma, Amina Kherrour Mehdi, Julien Langrand-Escure, Pierre Fournel, Grégoire Pigne, Léa Saban-Roche, Nicolas Magne, Cécile Vassal, Jean-Philippe Jacquin, Carole Ramirez, Alexis Vallard, Olivier Collard, Romain Rivoirard, Ivan Graber, Stéphanie Trager Maury, Elodie Duboisset, Jorge Ayllon Ugarte, Dalilia Rami, Christine Saler, Manon Reinbolt, Clara Le Fevre, Meher Ben Abdelghani, Louis-Marie Dourthe, Joffrey Perruisseau-Carrier, Marlène Nguimpi-Tambou, Flavie Barret, Luisa Di Stefano Anna, Annie Balthazard, Camille Vassord-Dang, Mathilde Le Marchand, Julien Vergniol, Iulia Pripon, Axelle Daemaegdt, Vanessa Latry, Muna Larrieu, Gaëlle Landry, Laetitia Touihri Maximin, Francesco Del Piano, Agnès Barlet, Mylène Vernisse, Sophie Lafond, Charline Genin, Camille Sibertin-Blanc, Emilien Chabrillac, Caroline Gregoire, Sébastien Vergez, Quentin Panouille, Rosine Guimbaud, Floriane Richa, Loïc Lebellec, Sophie Gounin, Guillaume Buiret, Marine Baudin, Hervé Hamon, Anne-Claire Deshorgue, Eduardo Barrascout, Stéphanie Legrand, Morgane Houlze, Linda Cambula, Anthony Lopez, Guillaume Fouquet, Kahina Touabi, Adeline GermaIn, Benoit Godbert, Florence Voivret, Julie Perrin, Rosa Da Silva, Emilie Bernichon, GCO-002 CACOVID-19 collaborators/investigators, Moulin, S., Leleu, O., Leparree, S., Goasdoue, H., Piprot, C., Tourneur, G., Bayart, V., Lignier, D., Lachaier, E., Khamari, M., Coutte, A., Siembida, N., Houessinon, A., Regimbeau, J.M., Chauffert, B., Moreira, A., Hautefeuille, V., Hee, C., Boone, M., Bihan, C., Chive, E., Poulet-Potriquier, S., Fahem, R., Luet, D., Roquin, G., Vitellius, C., Cornet-Trichereau, N., Caroli-Bosc, F.X., Thirot-Bidault, A., Ropert, S., Gachet-Masson, J., Dehais, M., L'helgoualc'h, G.A., Ali-Mahamadou, I., Talfi, S., Belmont, L., Kilendo, D., Benrezzak, N., Dubief, E., Conroy, G., Delique, L., Basso, M., Pons, I., Salignon, K., Villing, A.L., Mougenot, E., Porebski, C., Guiatni, A., Cloarec, N., Mineur, L., Bouchaud, M., David, C., Peytier, A., Greletty, T., Audemar, F., Vignes, E., Minne, F., Goldzak, G., Huysman, F., Hocine, F., Lakkis, Z., Mansi, L., Meynard, G., Almotlak, H., Klajer, E., Sun, X.S., Wasselin, J., Catala, P., Mazuy, C., Vandamme, H., Prevost, J.B., Fadin, A., Basson, L., Huguet, J.B., Dos Santos, E., Jany, B., Saad, A., Goutorbe, F., Oziol, E., Ramdani, M., Kadiri, O., Garbay, D., Huet, C., Giroux Leprieur, E., Teng, W., Monvoisin, J., Arnaud Coffin, P., Roux, S., Orfeuvre, H., Chagros, M., Pillon, D., Rassoul, A., Poureau, P.G., Novello, C., Ducray, F., Trouba, C., Bastit, V., Babin, E., Thariat, J., Leon, V., Courtecuisse, A.C., Vambre, J., Tack, V., Desauw, C., Meniai, F., Peres, C., Esparcieux, A., Perrier, H., Doux, N., Kaphan, R., Roques, B., Rebischung, C., Mille, D., Fernandes, G., Abdelli, N., Jousset, N., Combe, P., Jonveaux, E., Dumont, P., Kanaan, M., Berthelot Gras, C., Panis, V., Kaluzinski, L., Venant-Valery, M., Lam, Y.H., Vallee, L., Riviere, F., Durand, M., Benghadid, D., Villeneuve, E., Hentic Dhome, O., Laurent, L., Bounouar, Z., De Mestier, L., Dubois, J., Eyriey, M., Moreau, L., Ahle, G., Baihas, D., Aldabbagh, K., Degriffolet, D., Sebbagh, V., Seghezzi, J.C., Lozach-Brugirard, M., Mandrou, J., Mavier, L., Hennetier, F., Wagner, J.P., Carola, E., Chandirakumaran, K., Loutski, S., Cojean-Zelek, I., Bouras, A., Lacour, S., Froura, F., Ben Nadji, H., Cattelain, S., Darloy, F., Jolimoy Boilleau, G., Maissiat, C., Darut-Jouve, A., Lorgis, V., Charifi-Alaoui, I., Ghiringhelli, F., Drouillard, A., Chaix, M., Manfredi, S., Lepage, C., Gagnaire, A., Latournerie, M., Jourdan, S., Perrot, N., Folia, M., Minello, A., Jouve, J.L., Fery, M., Landau, A., Evrard, D., Valenza, B., Paitel, J.F., Chablais, L., Kreitmann, T., Lancry-Lecomte, L., Monard, A., Faugeras, E., Boucheret, P., Glommeau, C., Tchikladze, C., Garnier Tixidre, C., Long, J., Zaidi, M., Delabarre, V., Meyzenc, J., Ferrand, L., Moro-Sibilot, D., Bouheret, P., Leyronnas, C., Herve, C., Thoor, A., Jacquet, E., Roth, G., Madapathage-Senanyake, V., Chupeau, P., Bieber, E., Rosso, M., Lepage, I., Priou, F., Laly, M., Aprelon, S., Sobolak, N., Homokos, H., Pointreau, Y., Watelle, F., Pham-Becker, A., Lauridant, G., Turpin, A., Dujardin, C., Lenglin, E., Nienguet Tsota, A., Dominguez, S., Forestier, A., Nouvel, F., Lerooy, J., Ratajczak, C., Romano, O., Brzyski, D., Barriere, A., Genet, D., Tisse, J., Zasadny, X., Grelet, A., Hennion-Imbault, A., Haustraete, E., Louafi, S., Awad, M., Zekri, Y., Cheneau, C., Leissen, N., Egreteau, J., Breant, A., Sarabi, M., Labonne, S., Forestier, J., Leclercq, C., Prunier-Bossion, F., Ray Coquard, I., Guillet, M., Theillaumas, A., Prome, E., Walter, T., Philouze, P., Lawo, M., De Talhouet, S., Beuvelot, J., Molin, Y., Bellecoste Martin, M., Saussereau, M., Agnelli, L., Fakhry, N., Laplace, C., Norguet Monnereau, E., Boucard, C., Djenad, K., Fontaine, C., Seitz, J.F., Dahan, L., Sigrand, J., Duluc, M., Locher, C., Fleury, M., Brou Marie, A., Berkane, R., Poupblanc, S., Auby, D., Petran, D., Texereau, P., Guerineau, E., Andre, M., Mahjoubi, L., Sarrazin, F., Jeanson, S., Gschwend, A., Birr, V., Debieuvre, D., Fore, M., Noirclerc, M., Dahou, S., Spaeth, D., Lambotin, M., Lelu, T., Linot, B., Hugon, N., Rousseau, D., Castanie, H., Lenne, C., Lortholary, A., Cessot, A., Merzoug, M., Naudin, C., Vannetzel, J.M., Aziz, G., Hadj Arab, Y., Pernes, S., Roche-Lachaise, I., Fiteni, F., Yahiaoui, H., Marel Lopez, G., Oddoz, J., Peira, F., Michel, O., Meunier, J., Ouahrani, B., Roger, A., Branco, S., Nguyen, V., Gisselbrecht, M., Hammad, G., Mordant, P., Stroksztejn, M., Pocard, M., Nlo Meyengue, L., Aparicio, T., Sacco, E., Simon Anne, S., Fabre-Guillevin, E., Wislez, M., Slim, M., Zaanan, A., Cadranel, J., Pluvy, J., Ursu, R., Geraldo, A., Lihi, R., Vo, M., Brouk, Z., Colle, R., Bennamoun, M., Lacan, F., Louvet, C., Mebarki, S., Veyri, M., Paillaud, E., Lucas, C., Dubreuil, O., Lyamani, J., Idbaih, A., Agguini, H., Soularue, E., Canellas, A., Zalcman, G., Jourdaine, C., Verillaud, B., Herzine, H., Raymond, E., Mathiot, N., Palmieri, L.J., Epanya, C., Taieb, J., Bertrand, E., Goujon, G., Namour, C., Gazeau, B., Zafirova, B., Mirghani, H., Belin, C., Belkhir, K., Gharib, M., Vozy, A., Amrane, K., Spano, J.P., Wassermann, J., Feuvret, L., Bachet, J.B., Philonenko, S., Guillot, L., Zabbe, M., Gibiat, S., Baylot, C., Jouinot, A., Leduc, N., Vieillot, S., James, L., Ducerf, C., Blanc, J.F., Falandry Leger, C., Wautot, V., Chauvenet, M., Vincent, A., Tougeron, D., Goulvent, S., Suc, E., Laurenty, A.P., Marquis, E., Bonnaire, M., Dewolf, M., Brenet, E., Billard, D., Litre, C.F., Dumazet, A., Botsen, D., Vazel, M., Carlier, C., Bonnerave, D., Marchand-Crety, C., Bouche, O., Fosse, P., Sefrioui, D., Michel, P., Watson, S., Neuzillet, C., Torche, F., Muron, T., Natur, S., Desgrippes, R., Bihel, V., Ferrand, F.R., Leiterer, C., Lavole, J., Moquet, C., Pressoir, N., Dziukala, C., Ligeza Poisson, C., Naji, A., Williet, N., Phelip, J.M., Di Palma, F., Kherrour Mehdi, A., Langrand-Escure, J., Fournel, P., Pigne, G., Saban-Roche, L., Magne, N., Vassal, C., Jacquin, J.P., Ramirez, C., Vallard, A., Collard, O., Rivoirard, R., Graber, I., Trager Maury, S., Duboisset, E., Ayllon Ugarte, J., Rami, D., Saler, C., Reinbolt, M., Le Fevre, C., Ben Abdelghani, M., Dourthe, L.M., Perruisseau-Carrier, J., Nguimpi-Tambou, M., Barret, F., Di Stefano Anna, L., Balthazard, A., Mabro, M., Vassord-Dang, C., Le Marchand, M., Vergniol, J., Pripon, I., Daemaegdt, A., Latry, V., Larrieu, M., Landry, G., Touihri Maximin, L., Del Piano, F., Barlet, A., Vernisse, M., Lafond, S., Genin, C., Sibertin-Blanc, C., Chabrillac, E., Gregoire, C., Vergez, S., Panouille, Q., Guimbaud, R., Richa, F., Lebellec, L., Gounin, S., Buiret, G., Baudin, M., Hamon, H., Deshorgue, A.C., Barrascout, E., Legrand, S., Houlze, M., Cambula, L., Lopez, A., Fouquet, G., Touabi, K., GermaIn, A., Godbert, B., Voivret, F., Perrin, J., Da Silva, R., Bernichon, E., Chemistry, Oncogenesis, Stress and Signaling (COSS), Université de Rennes (UR)-CRLCC Eugène Marquis (CRLCC)-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Pontchaillou [Rennes], Cancer Heterogeneity, Plasticity and Resistance to Therapies - UMR 9020 - U 1277 (CANTHER), Institut Pasteur de Lille, Réseau International des Instituts Pasteur (RIIP)-Réseau International des Instituts Pasteur (RIIP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Lille-Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille)-Centre National de la Recherche Scientifique (CNRS), Centre Léon Bérard [Lyon], Lipides - Nutrition - Cancer [Dijon - U1231] (LNC), Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Centre Régional de Lutte contre le Cancer François Baclesse [Caen] (UNICANCER/CRLC), Normandie Université (NU)-UNICANCER-Tumorothèque de Caen Basse-Normandie (TCBN), CH Colmar, Institut Curie [Paris], Centre Hospitalier Universitaire de Reims (CHU Reims), Génomique et Médecine Personnalisée du Cancer et des Maladies Neuropsychiatriques (GPMCND), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre Hospitalier Emile Muller [Mulhouse] (CH E.Muller Mulhouse), Groupe Hospitalier de Territoire Haute Alsace (GHTHA), CHU Tenon [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), AP-HP - Hôpital Cochin Broca Hôtel Dieu [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Hôpital Beaujon, Hôpital Foch [Suresnes], CHU Saint-Antoine [AP-HP], ARCAGY-GINECO, Interactions hôte-greffon-tumeur, ingénierie cellulaire et génique - UFC (UMR INSERM 1098) (RIGHT), Institut National de la Santé et de la Recherche Médicale (INSERM)-Etablissement français du sang [Bourgogne-Franche-Comté] (EFS BFC)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Institut Gustave Roussy (IGR), Département de médecine nucléaire [Rennes], CRLCC Eugène Marquis (CRLCC), Département de médecine oncologique [Gustave Roussy], Département de cancérologie cervico-faciale [Gustave Roussy] (CCF), Centre Jean Bernard [Institut Inter-régional de Cancérologie - Le Mans], Institut du Cerveau = Paris Brain Institute (ICM), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Sorbonne Université (SU)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Hopital Saint-Louis [AP-HP] (AP-HP), Unité de génétique et biologie des cancers (U830), Institut Curie [Paris]-Institut National de la Santé et de la Recherche Médicale (INSERM), AbbVie, Merck, Carthera, Transgene, Nutritheragene, Roche, Air Liquide, Eli Lilly Japan, LEO Pharma Research Foundation, Bayer, Novartis, Sanofi, Biogen, Institut National de la Santé et de la Recherche Médicale (INSERM)-CRLCC Eugène Marquis (CRLCC)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Institut National de la Santé et de la Recherche Médicale (INSERM), UNICANCER-Tumorothèque de Caen Basse-Normandie (TCBN)-Normandie Université (NU), Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Institut National de la Santé et de la Recherche Médicale (INSERM)-Etablissement français du sang [Bourgogne-Franche-Comté] (EFS [Bourgogne-Franche-Comté])-Université de Franche-Comté (UFC), Institut du Cerveau et de la Moëlle Epinière = Brain and Spine Institute (ICM), Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [AP-HP], and Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Male, 0301 basic medicine, Cancer Research, medicine.medical_treatment, Disease, law.invention, Cohort Studies, 0302 clinical medicine, Mechanical ventilation, Risk Factors, law, Neoplasms, Medicine, Prospective Studies, Prospective cohort study, Original Research, Cancer, Intensive care unit, 3. Good health, Death, Oncology, 030220 oncology & carcinogenesis, Female, France, Immunotherapy, Cohort study, medicine.medical_specialty, chemotherapy. radiotherapy, Antineoplastic Agents, [SDV.CAN]Life Sciences [q-bio]/Cancer, 03 medical and health sciences, Internal medicine, Humans, Chemotherapy, Mortality, Pandemics, Aged, Retrospective Studies, Radiotherapy, SARS-CoV-2, business.industry, COVID-19, Retrospective cohort study, Odds ratio, medicine.disease, Antineoplastic Agents/adverse effects, Antineoplastic Agents/therapeutic use, COVID-19/mortality, France/epidemiology, Neoplasms/mortality, Neoplasms/therapy, Neoplasms/virology, SARS-CoV-2/isolation & purification, 030104 developmental biology, business
Abstract

Background Cancer patients are thought to have an increased risk of developing severe Coronavirus Disease 2019 (COVID-19) infection and of dying from the disease. In this work, predictive factors for COVID-19 severity and mortality in cancer patients were investigated. Patients and Methods In this large nationwide retro-prospective cohort study, we collected data on patients with solid tumours and COVID-19 diagnosed between March 1 and June 11, 2020. The primary endpoint was all-cause mortality and COVID-19 severity, defined as admission to an intensive care unit (ICU) and/or mechanical ventilation and/or death, was one of the secondary endpoints. Results From April 4 to June 11, 2020, 1289 patients were analysed. The most frequent cancers were digestive and thoracic. Altogether, 424 (33%) patients had a severe form of COVID-19 and 370 (29%) patients died. In multivariate analysis, independent factors associated with death were male sex (odds ratio 1.73, 95%CI: 1.18-2.52), ECOG PS ≥ 2 (OR 3.23, 95%CI: 2.27-4.61), updated Charlson comorbidity index (OR 1.08, 95%CI: 1.01-1.16) and admission to ICU (OR 3.62, 95%CI 2.14-6.11). The same factors, age along with corticosteroids before COVID-19 diagnosis, and thoracic primary tumour site were independently associated with COVID-19 severity. None of the anticancer treatments administered within the previous 3 months had any effect on mortality or COVID-19 severity, except cytotoxic chemotherapy in the subgroup of patients with detectable SARS-CoV-2 by RT-PCR, which was associated with a slight increase of the risk of death (OR 1.53; 95%CI: 1.00-2.34; p = 0.05). A total of 431 (39%) patients had their systemic anticancer treatment interrupted or stopped following diagnosis of COVID-19. Conclusions Mortality and COVID-19 severity in cancer patients are high and are associated with general characteristics of patients. We found no deleterious effects of recent anticancer treatments, except for cytotoxic chemotherapy in the RT-PCR-confirmed subgroup of patients. In almost 40% of patients, the systemic anticancer therapy was interrupted or stopped after COVID-19 diagnosis., Highlights • A total of 1289 patients with solid tumours and COVID-19 were analysed. • Mortality and COVID-19 severity were mainly driven by patient general characteristics. • Overall, we found no deleterious effects of recent anticancer treatments on mortality. . • Systemic anticancer treatment was interrupted or stopped in 39% of patients.

Published
2020
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5. In vitro assessment of osteoblast and macrophage mobility in presence of β-TCP particles by videomicroscopy

Author

Florence Pascaretti-Grizon, Daniel Chappard, Michel Félix Baslé, Johanne Beuvelot, M.F. Moreau, R. Filmon, Groupe d'Études Remodelage Osseux et bioMatériaux (GEROM), and Université d'Angers (UA)

Subjects
Calcium Phosphates, Materials science, Biocompatibility, [SDV]Life Sciences [q-bio], Biomedical Engineering, Motility, Biocompatible Materials, Nanotechnology, macrophage, 02 engineering and technology, Biomaterials, Mice, 03 medical and health sciences, Cell Movement, In vivo, Materials Testing, medicine, Animals, Humans, Macrophage, Cells, Cultured, 030304 developmental biology, videomicroscopy, 0303 health sciences, Microscopy, Video, Osteoblasts, Macrophages, Metals and Alloys, Biomaterial, Osteoblast, β-TCP, 021001 nanoscience & nanotechnology, cell mobility, In vitro, medicine.anatomical_structure, Cell culture, osteoblast, Ceramics and Composites, Biophysics, 0210 nano-technology
Abstract

International audience; β-TCP is widely used to repair bone defects due to its good biocompatibility, macroporosity (favoring bone ingrowth) and bioresorbability. However, cell interactions with the biomaterial at the first times of implantation remain largely unknown. We have observed cell behaviors in direct contact with β-TCP particles using long-term culture under videomicroscopy. Osteoblastlike cells (SaOs-2) and macrophages (J774.2 and mouse peritoneal macrophages) were cultured in the presence of β-TCP particles. For each experiment, images from 20 independent fields were acquired and stored every 15 min during 8 days. At the end of the culture, they were combined to generate time lapse videos; coverslips were fixed and observed by scanning electron microscopy (SEM). SaOs-2 proliferation was determined by counting cells on six different and independent fields at days 1, 3, and 6. Videos showed the capacity of cells to displace the particles. Dynamic follow-up showed active proliferation of SaOs-2 occurring in the direction of the particles. J774.2 and peritoneal macrophages did not proliferate but came in direct contact with the particles and actively eroded them. SEM showed that cells were stretched and fixed onto the surface and seemed to climb from the coverslip to the particles. The long-term culture under videomicroscopy allowed a better understanding of the colonization process of β-TCP particles by osteoblastlike cells and macrophages. Data obtained from long-term videomicroscopy are in agreement with in vivo observations confirming the interest of β-TCP to promote osteogenesis.

Published
2010
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6. In vitro calcification of chemically functionalized carbon nanotubes

Author

Romain Mallet, Jack Cousseau, Vincent Fernandez, Michel Félix Baslé, Céline Bergeret, Johanne Beuvelot, Daniel Chappard, Institut des Matériaux Jean Rouxel (IMN), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Ecole Polytechnique de l'Université de Nantes (EPUN), and Université de Nantes (UN)-Université de Nantes (UN)

Subjects
Thermogravimetric analysis, Materials science, Scanning electron microscope, Carboxylic Acids, Biomedical Engineering, Infrared spectroscopy, 02 engineering and technology, Carbon nanotube, Spectrum Analysis, Raman, 010402 general chemistry, 01 natural sciences, Biochemistry, law.invention, Biomaterials, symbols.namesake, Calcification, Physiologic, Biomimetics, law, Materials Testing, Spectroscopy, Fourier Transform Infrared, Humans, Composite material, Molecular Biology, Tissue Scaffolds, Nanotubes, Carbon, General Medicine, 021001 nanoscience & nanotechnology, Body Fluids, 0104 chemical sciences, Chemical engineering, Attenuated total reflection, symbols, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Surface modification, Collagen, Hydroxyapatites, 0210 nano-technology, Raman spectroscopy, Biotechnology, Biomineralization
Abstract

International audience; Bone is composed of two phases. The organic phase is made of collagen fibrils assembled in broad fibers acting as a template for mineralization. The mineral phase comprises hydroxyapatite (HAP) crystals grown between and inside the collagen fibers. We have developed a biomimetic material using functionalized carbon nanotubes as scaffold to initiate in vitro mineralization. Biomimetic formation of HAP was performed on single-walled carbon nanotubes (SWCNTs) which have been grafted with carboxylic groups. Two types of nanotubes, HiPco(R) and Carbon Solutions(R), were oxidized via various acidic processes, leading to five different groups of carboxylated nanotubes, fully characterized by physical methods (thermogravimetric analysis, attenuated total reflectance infrared spectroscopy and X-ray photoelectron spectroscopy). All samples were dispersed in ultra-pure water and incubated for 2weeks in a synthetic body fluid, in order to induce the calcification of the SWCNTs. Scanning electron microscopy (SEM) and energy-dispersive X-ray analysis studies showed that Ca(2+) and PO(4)(3-) ions were deposited as round-shaped nodules (calcospherites) on the carboxylated SWCNTs. Fourier transform infrared and Raman spectroscopic studies confirmed the HAP formation, and image analysis made on SEM pictures showed that calcospherites and carboxylated SWCNTs were packed together. The size of calcospherites thus obtained in vitro from the HiPco(R) series was close to that issued from calcospherites observed in vivo. Functionalization of SWCNTs with carboxylic groups confers the capacity to induce calcification similar to woven bone.

Published
2010
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7. In vitro kinetic study of growth and mineralization of osteoblast-like cells (Saos-2) on titanium surface coated with a RGD functionalized bisphosphonate

Author

Daniel Chappard, David Portet, M.F. Moreau, Hélène Libouban, Johanne Beuvelot, Michel Félix Baslé, Grégory Lecollinet, Groupe d'Études Remodelage Osseux et bioMatériaux (GEROM), Université d'Angers (UA), and Laboratoires Goëmar S.A.S.

Subjects
bisphosphonate, Materials science, Time Factors, Surface Properties, medicine.medical_treatment, [SDV]Life Sciences [q-bio], Biomedical Engineering, chemistry.chemical_element, Nanotechnology, Biocompatible Materials, 02 engineering and technology, In Vitro Techniques, Mineralization (biology), Osseointegration, Cell Line, Biomaterials, 03 medical and health sciences, Spectroscopy, Fourier Transform Infrared, medicine, Cell Adhesion, Image Processing, Computer-Assisted, Humans, titanium, Cell adhesion, 030304 developmental biology, 0303 health sciences, Osteoblasts, Diphosphonates, Osteoblast, surface treatment, Bisphosphonate, 021001 nanoscience & nanotechnology, In vitro, adhesion molecule, Kinetics, medicine.anatomical_structure, chemistry, Biophysics, osteoblast, Titanium surface, Adsorption, 0210 nano-technology, Peptides, Oligopeptides, Titanium
Abstract

International audience; Osteoconduction and osseointegration are the critical stages for implantation success. Peptides containing RGD (Arg-Gly-Asp) adhesive sequence are known to promote cell adhesion and consequently to favor osseointegration of medical devices. In this study, RGD peptides were coupled to a bisphosphonate used as an anchor system and chemically adsorbed on polished titanium discs. Two different concentrations, 10−10 mol/L (RGD 10−10) and 10−4 mol/L (RGD 10−4) were compared to non coated discs (RGD 0). Adhesion, spreading, and mineralization of osteoblast-like cells (Saos-2) were assessed. Mineralization kinetic was done at 3, 6, 10, 14, and 18 days of culture; the extent of mineral deposits was quantified by image analysis. Histogram repartitions of nuclear area, characterizing cell spreading, showed a shift to higher values in cells cultured on RGD coated titanium disks. Mineralization started at day 3 in the three groups, but had a faster development in the RGD 10−10 group from day 6 to day 18 compared to RGD 0 and RGD 10−4. At day 18, the percentage of mineralized area was significantly higher for RGD 10−10 compared to RGD 0 (p < 0.05). In the present study, this new method was found suitable to anchor RGD containing species on titanium: this favored adhesion and spreading of osteoblast-like cells and mineralization compared to noncoated titanium.

Published
2009
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