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1. The possibilities of the use of N-of-1 and do-it-yourself trials in nutritional research.

Author

Tanja Krone, Ruud Boessen, Sabina Bijlsma, Robin van Stokkum, Nard D S Clabbers, and Wilrike J Pasman

Subjects
Medicine, Science
Abstract

BACKGROUND:N-of-1 designs gain popularity in nutritional research because of the improving technological possibilities, practical applicability and promise of increased accuracy and sensitivity, especially in the field of personalized nutrition. This move asks for a search of applicable statistical methods. OBJECTIVE:To demonstrate the differences of three popular statistical methods in analyzing treatment effects of data obtained in N-of-1 designs. METHOD:We compare Individual-participant data meta-analysis, frequentist and Bayesian linear mixed effect models using a simulation experiment. Furthermore, we demonstrate the merits of the Bayesian model including prior information by analyzing data of an empirical study on weight loss. RESULTS:The linear mixed effect models are to be preferred over the meta-analysis method, since the individual effects are estimated more accurately as evidenced by the lower errors, especially with lower sample sizes. Differences between Bayesian and frequentist mixed models were found to be small, indicating that they will lead to the same results without including an informative prior. CONCLUSION:For empirical data, the Bayesian mixed model allows the inclusion of prior knowledge and gives potential for population based and personalized inference.

Published
2020
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2. Abstracts from the Food Allergy and Anaphylaxis Meeting 2016

Author

Guillaume Pouessel, Claire Claverie, Julien Labreuche, Jean-Marie Renaudin, Aimée Dorkenoo, Mireille Eb, Anne Moneret-Vautrin, Antoine Deschildre, Stephane Leteurtre, Linus Grabenhenrich, Margitta Worm, Sabine Dölle, Kathrin Scherer, Isidor Hutteger, Morten Christensen, Carsten Bindslev-Jensen, Charlotte Mortz, Esben Eller, Henrik Fomsgaard Kjaer, Leonor Carneiro-Leão, Jenny Badas, Alice Coimbra, Dikla Pivko Levy, Moshe Ben-Shoshan, Ayelet Rimon, Shira Benor, Nicolette J. T. Arends, Nikki Edelbroek, Hans de Groot, Joyce A. M. Emons, H. Kim A. Brand, Dirk Verhoeven, Leonieke N. van Veen, Nicolette W. de Jong, Geunwoong Noh, Eun Ha Jang, Mariona Pascal, Olga Dominguez, Mònica Piquer, Montserrat Alvaro, Rosa Jimenez-Feijoo, Jaime Lozano, Adriana Machinena, Maria del Mar Folqué, Maria Teresa Giner, Ana María Plaza, Paul Turner, Nandinee Patel, Marta Vazquez-Ortiz, Sarah Lindsley, Lucy Walker, Simon Rosenberg, Adriano Mari, Claudia Alessandri, Ivana Giangrieco, Lisa Tuppo, Chiara Rafaiani, Georg Mitterer, Michela Ciancamerla, Rosetta Ferrara, Maria Livia Bernardi, Danila Zennaro, Maurizio Tamburrini, Maria Antonetta Ciardiello, Christian Harwanegg, Antonio Fernandez, Regina Selb, Philippe Egenmann, Michelle Epstein, Karin Hoffmann-Sommergruber, Frits Koning, Martinus Lovik, E. N. Clare Mills, Javier Moreno, Henk van Loveren, Jean-Michel Wal, Susanne Diesner, Cornelia Bergmayr, Barbara Pfitzner, Vera Elisabeth Assmann, Philipp Starkl, David Endesfelder, Thomas Eiwegger, Zsolt Szepfalusi, Heinz Fehrenbach, Erika Jensen-Jarolim, Anton Hartmann, Isabella Pali-Schöll, Eva Untersmayr, Soren Wille, Peter Meyer, Caroline Klingebiel, Jonas Lidholm, Angelica Ehrenberg, Jonas Östling, Isabelle Cleach, Jean-Louis Mège, Joana Vitte, Roberta Aina, Pawel Dubiela, Sabine Pfeifer, Merima Bublin, Christian Radauer, Piotr Humeniuk, Stefan Kabasser, Riccardo Asero, Gador Bogas, Francisca Gomez, Paloma Campo, Maria Salas, Inmaculada Doña, Esther Barrionuevo, Maria Auxiliadora Guerrero, Cristobalina Mayorga, Ana Prieto, Domingo Barber, Maria Jose Torres, Annette Jamin, Andrea Wangorsch, Barbara Ballmer, Stefan Vieths, Stephan Scheurer, Danijela Apostolovic, Jelena Mihailovic, Maja Krstic, Maria Starkhammar, Tanja Cirkovic Velickovic, Carl Hamsten, Marianne van Hage, Francine C. van Erp, Edward F. Knol, Hannah M. Kansen, Bo Pontoppidan, Yolanda Meijer, Cornelis K. van der Ent, André C. Knulst, Rebekah Sayers, Helen Brown, Adnan Custovic, Angela Simpson, Claire Mills, Juliane Schulz, Network for Online Registration of Anaphylaxis (NORA), Jaap Akkerdaas, Muriel Totis, Annabelle Capt, Corinne Herouet-Guicheney, Ronald van Ree, Tushar Banerjee, Antima Banerjee, Mathilde Claude, Grégory Bouchaud, Roberta Lupi, Laure Castan, Olivier Tranquet, Sandra Denery-Papini, Marie Bodinier, Chantal Brossard, Rosella De Poi, Elisa Gritti, Emiliano De Dominicis, Bert Popping, Patrizia Polverino de Laureto, Kati Palosuo, Anna Kaarina Kukkonen, Anna Pelkonen, Mika Mäkelä, Nanju Alice Lee, Johanna Rost, Sridevi Muralidharan, Dianne Campbell, Sam Mehr, Catherine Nock, Joseph Baumert, Steve Taylor, Carla Mastrorilli, Salvatore Tripodi, Carlo Caffarelli, Serena Perna, Andrea Di Rienzo Businco, Ifigenia Sfika, Arianna Dondi, Annamaria Bianchi, Carlotta Povesi Dascola, Giampaolo Ricci, Francesca Cipriani, Nunzia Maiello, Michele Miraglia del Giudice, Tullio Frediani, Simone Frediani, Francesco Macrì, Chiara Pistoletti, Iride Dello Iacono, Maria Francesca Patria, Elena Varin, Diego Peroni, Pasquale Comberiati, Loredana Chini, Viviana Moschese, Sandra Lucarelli, Roberto Bernardini, Giuseppe Pingitore, Umberto Pelosi, Roberta Olcese, Matteo Moretti, Anastasia Cirisano, Diego Faggian, Alessandro Travaglini, Mario Plebani, Maria Carmen Verga, Mauro Calvani, Paolo Giordani, Paolo Maria Matricardi, Noe Ontiveros, Francisco Cabrera-Chavez, Julie Galand, Etienne Beaudouin, The Anaphylaxis Working Group of the French Allergology SocietyThe Anaphylaxis Working Group of the French Allergology Society, Florence Pineau, Shinobu Sakai, Kayoko Matsunaga, Reiko Teshima, Colette Larré, Sandra Denery, Sebastian Tschirner, Valérie Trendelenburg, Gabriele Schulz, Bodo Niggemann, Kirsten Beyer, Youcef Bouferkas, Younes Belabbas, Djamel Saidi, Omar Kheroua, Kamel Eddine El Mecherfi, Malika Guendouz, Abir Haddi, Hanane Kaddouri, Luis Amaral, Ana Pereira, Susana Rodrigues, Mareen Datema, Laurian Jongejan, Michael Clausen, Andre Knulst, Nikolaos Papadopoulos, Marek Kowalski, Frédéric de Blay, Aeilko Zwinderman, Karin Hoffman-Sommergruber, Barbara Ballmer-Weber, Montserrat Fernandez-Rivas, Shan Deng, Jia Yin, Charlotte Eisenmann, Maria Nassiri, Rabea Reinert, Johanna P. M. van der Valk, Roy Gerth van Wijk, Yvonne Vergouwe, Ewout W. Steyerberg, Marit Reitsma, Harry J. Wichers, Huub F. J. Savelkoul, Berber Vlieg-Boerstra, Anthony E. J. Dubois, Fabrícia Carolino, Ana Rodolfo, Josefina Cernadas, Dasha Roa-Medellín, Ana Rodriguez-Fernandez, Joaquín Navarro, Vicente Albendiz, María Luisa Baeza, Sonsoles Intente-Herrero, Andrea Mikkelsen, Kirsten Mehlig, Lauren Lissner, Linda Verrill, Stefano Luccioli, Jolanda van Bilsen, Frieke Kuper, André Wolterbeek, Tanja Rouhani Rankouhi, Lars Verschuren, Hilde Cnossen, Prescilla Jeurink, Johan Garssen, Léon Knippels, Jossie Garthoff, Geert Houben, Winfried Leeman, M. Eleonore Pettersson, Afke M. M. Schins, Gerard H. Koppelman, Boudewjin J. Kollen, Svitlana Zubchenko, Sarah Kuntz, Pablo Mérida, Montserrat Álvaro, Monica Piquer, Carmen Riggioni, Juan Heber Castellanos, Rosa Jimenez, Melanie Cap, Elodie Drumez, Stéphanie Lejeune, Caroline Thumerelle, Clémence Mordacq, Véronique Nève, Sonia Ricò, Margherita Varini, Rita Nocerino, Linda Cosenza, Antonio Amoroso, Margherita Di Costanzo, Carmen Di Scala, Giorgio Bedogni, Roberto Berni Canani, Paul J. Turner, Paloma Poza-Guedes, Ruperto González-Pérez, Inmaculada Sánchez-Machín, Victor Matheu-Delgado, Erik Wambre, Anne-Sofie Ballegaard, Charlotte Madsen, Juliane Gregersen, Katrine Lindholm Bøgh, Philippe Aubert, Michel Neunlist, Antoine Magnan, Daniel Lozano-Ojalvo, Alba Pablos-Tanarro, Leticia Pérez-Rodríguez, Elena Molina, Rosina López-Fandiño, Akila Rekima, Patricia Macchiaverni, Mathilde Turfkruyer, Sebastien Holvoet, Lénaïck Dupuis, Nour Baiz, Isabella Annesi-Maesano, Annick Mercenier, Sophie Nutten, Valérie Verhasselt, Ines Mrakovcic-Sutic, Srdan Banac, Ivana Sutic, Zdenka Baricev-Novakovic, Ingrid Sutic, Valentino Pavisic, Rosa Muñoz-Cano, Teodoríkez Jiménez-Rodríguez, Daniel Corbacho, Jordi Roca-Ferrer, Joan Bartra, Aleksandar Bulog, Vladimir Micovic, Lidia Markiewicz, Agata Szymkiewicz, Anna Szyc, Barbara Wróblewska, Bryan M. Harvey, Lucien F. Harthoorn, A. Wesley Burks, Georgios Rentzos, Anna-Lena Bramstång Björk, Ulf Bengtsson, Colin Barber, Chrystyna Kalicinsky, Christine Breynaert, Lieve Coorevits, Cornelia Jansen, Erna Van Hoeyveld, Kristin Verbeke, Anne-Marie Kochuyt, Rik Schrijvers, Diana Deleanu, Adriana Muntean, Maria Konstantakopoulou, Maria Pasioti, Anastasia Papadopoulou, Anna Iliopoulou, Nikolaos Mikos, Evangelia Kompoti, Eunice Dias de Castro, Borja Bartalomé, Kok Loong Ue, Elizabeth Griffiths, Stephen Till, Kate Grimshaw, Graham Roberts, Anna Selby, Indre Butiene, Jose Ignacio Larco, Ruta Dubakiene, Ana Fiandor, Alessandro Fiocchi, Nikos Papadopoulos, Sigurveig Sigurdardottir, Aline Sprikkelman, Anne-Fleur Schoemaker, Paraskevi Xepapadaki, Thomas Keil, Zizi Cojocariu, Beatriz Secades Barbado, Vasti Iancu, Esozia Arroabarren, Marta Goñi Esarte, Miren Arteaga, Mayra Coutinho Andrade, Denise Borges, Jorge Kalil, Pedro Giavina Bianchi, Rosana Camara Agondi, Rinkesh Kumar Gupta, Akanksha Sharma, Kriti Gupta, Mukul Das, Premendra Dwivedi, Rusudan Karseladze, Liana Jorjoliani, Lali Saginadze, Mariam Tskhakaia, Katia Basello, Gabriele Piuri, Attilio Francesco Speciani, Michela Carola Speciani, Carla Camerotto, Francesco Zinno, Olga Pakholchuk, Svitlana Nedelska, Stefano Pattini, Maria Teresa Costantino, Silvia Peveri, Danilo Villalta, Eleonora Savi, Andrea Costanzi, Vera A. Revyakina, Marina A. Kiseleva, Elena D. Kuvshinova, Inna A. Larkova, Anton A. Shekhetov, Diana Silva, André Moreira, José Plácido, Hanneke van der Kleij, Esther van Twuijver, Robbert Sutorius, Pieter-Jan de Kam, Jenny van Odijk, Helen Lindqvist, Elin Lustig, Amyra Ali Azamar Jácome, Karla Leversia Borjas Aguilar, Miguel García Domínguez, David Alejandro Mendoza Hernández, Cristiano Caruso, Cono Casale, Gian Lodovico Rapaccini, Antonino Romano, Italo De Vitis, Renata R. Cocco, Carolina Aranda, Marcia C. Mallozi, Jackeline F. Motta, Lilian Moraes, Antonio Pastorino, Nelson Rosario, Ekaterini Goudouris, Arnaldo Porto, Neusa F. Wandalsen, Emanuel Sarinho, Flavio Sano, Dirceu Solé, Constantinos Pitsios, Maria Petrodimopoulou, Ekaterini Papadopoulou, Maria Passioti, Meropi Kontogianni, Nino Adamia, Ekaterina Khaleva, Ana Prieto del Prado, George Du Toit, Edyta Krzych, Urszula Samolinska-Zawisza, Konrad Furmanczyk, Aneta Tomaszewska, Filip Raciborski, Agnieszka Lipiec, Piotr Samel-Kowalik, Artur Walkiewicz, Jacek Borowicz, Boleslaw Samolinski, Aimee Lou Nano, Marysia Recto, Maria Luisa Somoza, Natalia Blanca López, Diana Pérez Alzate, Francisco Javier Ruano, Maria Isabel Garcimartín, Elisa Haroun, Maria Vázquez de la Torre, Antonia Rojas, Montserrat López Onieva, Gabriela Canto, Alexandra Rodrigues, Andreia Forno, António Jorge Cabral, Rute Gonçalves, Ilya Vorozhko, Tatyana Sentsova, Olga Chernyak, Svetlana Denisova, Lidia Ilènko, Valery Muhortnich, Caroline Zimmermann, Alexander Rohrbach, Faisal R. Bakhsh, Kollen Boudewijn, Anne-Marie Oomkes-Pilon, Dorien Van Ginkle, Mira Šilar, Anja Jeverica, Tina Vesel, Tadej Avčin, Peter Korošec, Johanna van der Valk, Irene Berends, Nicolette Arends, Maurits van Maaren, Harry Wichers, Joyce Emons, Anthony Dubois, Nicolette de Jong, Oksana Matsyura, Lesya Besh, Chung-Hsiung Huang, Tong-Rong Jan, Gary Stiefel, Jean Tratt, Kerrie Kirk, Fabricia Carolino, Stefania Arasi, Lucia Caminiti, Giuseppe Crisafulli, Chiara Fiamingo, Jlenia Fresta, Giovanni Pajno, Ben Remington, Astrid Kruizinga, W. Marty Blom, Joost Westerhout, Sabina Bijlsma, Joe Baumert, Mark Blankestijn, Henny Otten, Rob Klemans, Anouska D. Michelsen-Huisman, Harmieke van Os-Medendorp, Astrid G. Kruizinga, Astrid Versluis, Gert van Duijn, H. Mary-Lene de Zeeuw-Brouwer, Jacqueline J. M. Castenmiller, Hub P. J. M. Noteborn, Geert F. Houben, Kristian Bravin, David Luyt, Bushra Javed, Phil Couch, Christopher Munro, Phil Padfield, Matt Sperrin, Aideen Byrne, Lizalet Oosthuizen, Carina Kelleher, Fiona Ward, Niamh Brosnan, Graham King, Eva Corbet, Josué Alejandro Huertas Guzmán, Montserrat Bosque García, Oscar Asensio, Laura Valdesoiro Navarrete, Helena Larramona, Xavier Domingo Miró, Katarzyna Pyrz, Moira Austin, Yanne Boloh, Philip Couch, Deirdre Galloway, Pilar Hernandez, Jonathan O’B. Hourihane, Fiona Kenna, Barbara Majkowska-Wojciechowska, Lynne Regent, Marina Themisb, Sabine Schnadt, Aida Semic-Jusufagic, Audrey Dunn Galvin, Tiina Kauppila, Mikael Kuitunen, Nikolaos A. Kitsioulis, Nikolaos Douladiris, Sofia Kostoudi, Ioanna Manolaraki, Dimitris Mitsias, Emmanouil Manousakis, Nikolaos G. Papadopoulos, Rebecca Knibb, Jennifer Hammond, Richard Cooke, Jaakko Yrjänä, Anna-Maija Hanni, Päivi Vähäsarja, Oona Mustonen, Teija Dunder, Petri Kulmala, Eva Lasa, Carmen D’Amelio, Sara Martínez, Alejandro Joral, Gabriel Gastaminza, Maria Jose Goikoetxea, David C. A. Candy, Marleen T. J. Van Ampting, Manon M. Oude Nijhuis, Assad M. Butt, Diego G. Peroni, Adam T. Fox, Jan Knol, Louise J. Michaelis, Ines Padua, Patricia Padrao, Pedro Moreira, Renata Barros, Hanan Sharif, Manzoor Ahmed, Nehad Gomaa, Joris Mens, Koen Smit, Frans Timmermans, Tomaž Poredoš, Anja Koren Jeverica, Marjeta Sedmak, Evgen Benedik, Meta Accetto, Mirjana Zupančič, Glauce Yonamine, Gustavo Soldateli, Bruna Aquilante, Antonio Carlos Pastorino, Cleonir Lui de Moraes Beck, Andrea Keiko Gushken, Mayra de Barros Dorna, Cristiane Nunes dos Santos, Ana Paula Moschione Castro, Abdulhadi Al-Qahtani, Rand Arnaout, Agha Rehan Khaliq, Rashid Amin, Farrukh Sheikh, Jorge Alvarez, Marta Anda, Miriam Palacios, Montserrat De Prada, Carmen Ponce, Bianca Balbino, Riccardo Sibilano, Thomas Marichal, Nicolas Gaudenzio, Hajime Karasuyama, Pierre Bruhns, Mindy Tsai, Laurent L. Reber, Stephen J. Galli, Ana Reis Ferreira, Josefina R. Cernadas, Aida del Campo García, Sara Pereiro Fernández, Nerea Sarmiento Carrera, Fernando Bandrés Sánchez-Cruz, José Ramón Fernández Lorenzo, Stephanie Claus, Claudia Pföhler, Franziska Ruëff, Regina Treudler, Mercedes Escarrer Jaume, Agustin Madroñero, Maria Teresa Guerra Perez, Juan Carlos Julia, Charlotte Hands Plovdiv, Lee Gethings, Jim Langridge, Karine Adel-Patient, Hervé Bernard, Ivona Barcievic-Jones, Raditsa Sokolova, Rumyana Yankova, Mariya Ivanovska, Marianna Murdjeva, Tatyana Popova, Svetlan Dermendzhiev, Martin Karjalainen, Ulrike Lehnigk, Duncan Brown, Julie C. Locklear, Julie Locklear, Ioana Maris, Jonathan Hourihane, Cristina Ornelas, Joana Caiado, Manuel Branco Ferreira, Manuel Pereira-Barbosa, Yolanda Puente, Juan Carlos Daza, Francisco Javier Monteseirin, Natalia Ukleja-Sokolowska, Ewa Gawronska-Ukleja, Magdalena Zbikowska-Gotz, Zbigniew Bartuzi, Lukasz Sokolowski, Aine Adams, Bernard Mahon, Karen English, Nelly Gourdon-Dubois, Laetitia Sellam, Bruno Pereira, Elodie Michaud, Khaled Messaoudi, Bertrand Evrard, Jean-Luc Fauquert, Francisca Palomares, Gador Gomez, Maria Jose Rodriguez, Luisa Galindo, Ana Molina, Lorella Paparo, Maurizio Mennini, Rosita Aitoro, Adam Wawrzeńczyk, Michał Przybyszewski, Anna Wawrzeńczyk, Hulya Ercan Sarıcoban, Meltem Ugras, Zerrin Yalvac, Bertine M. J. Flokstra-de Blok, J. L. van der Velde, Andrea Vereda, Clara Ippolito, Amaranta Traversa, Daniela Adriano, Daniela Manila Bianchi, Silvia Gallina, Lucia Decastelli, Melina Makatsori, Anne Miles, Sonja Posega Devetak, Iztok Devetak, Soraya Ainad Tabet, Jeanette Fisker Trandbohus, Pernille Winther, Hans-Jørgen Malling, Kirsten Skamstrup Hansen, Lene Heise Garvey, Chia-Chi Wang, Yin-Hua Cheng, Chun-Wei Tung, Mariola Dietrich, Ingo Marenholz, Birgit Kalb, Sarah Grosche, Katharina Blümchen, Rupert Schlags, Mareike Price, Sylke Rietz, Jorge Esparza-Gordillo, Susanne Lau, Young-Ae Lee, Ali Almontasheri, Mohammad Al Bahkali, Sahar Elshorbagi, Abdullah Alfhaid, Mashary Altamimi, Eman Madbouly, Hassan Al-Dhekri, Rand K. Arnaout, Maria Basagaña, Sira Miquel, Borja Bartolomé, Bettina Brix, Stefanie Rohwer, Sandra Brandhoff, Alena Berger, Waltraud Suer, Alf Weimann, Cristina Bueno, Laura Martín-Pedraza, Sara Abián, Pablo San Segundo-Acosta, Juan Carlos López-Rodríguez, Rodrigo Barderas, Eva Batanero, Javier Cuesta-Herranz, María Teresa Villalba, Magna Correia, Filipe Benito-Garcia, Cristina Arêde, Susana Piedade, Mário Morais-Almeida, James Hindley, Ross Yarham, Anna Kuklinska-Pijanka, David Gillick, Karine Patient, Martin D. Chapman, Katrine L. Bøgh, Ana Miranda, Eugénia Matos, Anna Sokolova, Huan Rao, Ivona Baricevic-Jones, Frances Smith, Wentong Xue, Helga Magnusdottir, Anna G. Vidarsdottir, Sigrun Lund, Anders Blom Jensen, Bjorn R. Ludviksson, Reyna Simon, Robert Elfont, Sean Bennett, Robert Voyksner, Maria de Lurdes Torre, Songül Yürek, Margaretha A. Faber, Annick Bastiaensen, Evelyne Mangodt, Athina van Gasse, Ine Decuyper, Vito Sabato, Margo M. Hagendorens, Chris H. Bridts, Luc S. De Clerck, Didier Ebo, Susanne Schwarz, Mandy Ziegert, Saskia Albroscheit, Christian Schwager, Skadi Kull, Jochen Behrends, Niels Röckendorf, Frauke Schocker, Andreas Frey, Arne Homann, Wolf-Meinhard Becker, Uta Jappe, Nesrine Zaabat, Sylvia Osscini, Chantal Agabriel, Benoît Sterling, Ania Carsin, Valérie Liabeuf, Monica Maćków, Alina Zbróg, Monica Bronkowska, Justine Courtois, Romy Gadisseur, Catherine Bertholet, Pierre Lukas, Etienne Cavalier, Philippe Delahaut, Birgit Quinting, Margareta Brandt Gertmo, Ewa Ternesten Hasseus, Vladyslava Barzylovych, Júlio Oliveira, Luis F. Ensina, Carolina S. Aranda, Leire Dopazo, Rebeca Lopez, Raquel Perez, Laura Santos-Diez, Agurtzane Bilbao, Juan Miguel Garcia, Ignacio García Núñez, María Ángeles Algaba Mármol, María José Barasona Villarejo, José Antonio Bácter Martos, Marina Suárez Vergara, José María Ignacio García, Agata Michalska, Grzegorz Sergiejko, Robert Zacniewski, Ileana-Maria Ghiordanescu, Cristina Deaconu, Mihaela Popescu, Roxana Silvia Bumbacea, Alkerta Ibranji, Elida Nikolla, Gjustina Loloci, Nanna Juel-Berg, Lau Fabricius Larsen, Lars Kjaergaard Poulsen, João Marcelino, Ricardo Prata, Ana Célia Costa, Fátima Duarte, Marta Neto, Jennifer Santos, Luís Câmara Pestana, Daniel Sampaio, Paola Minale, Paola Dignetti, Donatella Bignardi, Irena Nedelea, Florin-Dan Popescu, Mariana Vieru, Florin-Adrian Secureanu, Carmen Saviana Ganea, Miguel Vieira, José Pedro Moreira Silva, Timothy Watts, Sophia Watts, Marta Lomikovska, Marina Peredelskaya, Natalia Nenasheva, Ivana Filipovic, Zorica Zivkovic, Djordje Filipovic, Jennette Higgs, Amena Warner, and Carla Jones

Subjects
Immunologic diseases. Allergy, RC581-607
Published
2017
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3. Lipidome Analysis in Brain and Peripheral Plasma Following Milk Fat Globule Membrane Supplementation in Rodents

Author

Rosalind Davies, Janna A. van Diepen, Lauren R. Brink, Sabina Bijlsma, Karen‐Anne McVey Neufeld, John F. Cryan, Siobhain M. O'Mahony, Ivana Bobeldijk, and Gabriele Gross

Subjects
Brain, Metabolic Disorders Radboud Institute for Molecular Life Sciences [Radboudumc 6], Lipid Droplets, Blood plasma, Rodents, Rats, Sphingomyelins, Rats, Sprague-Dawley, Mice, Milk fat globule membrane, Dietary Supplements, Lipidomics, Animals, Glycolipids, Phospholipids, Glycoproteins, Food Science, Biotechnology
Abstract

Scope: Milk fat globule membrane (MFGM) is an essential component of milk. Bovine MFGM (bMFGM) has been shown to support cognitive development and increase relative concentrations of serum phospholipids. This study investigated bioavailability of bMFGM components after oral administration in two preclinical models to explore whether dietary bMFGM induced parallel changes to plasma and brain lipidomes. Methods and results: Transgenic APOE*3.Leiden mice (n = 18/group) and Sprague-Dawley rats (n = 12/group) were fed bMFGM-enriched (MFGM+) or Control diet, after which phospholipid profiles were determined in peripheral plasma, hippocampus and prefrontal cortex tissue by targeted mass spectrometry. Multivariate analysis of lipidomic profiles demonstrated a clear separation between MFGM+ and Control plasma samples across rodents. In plasma, sphingomyelins contributed the most to the separation of lipid patterns among both models, where three sphingomyelins (d18:1/14:0, d18:1/23:0, d18:1/23:1[9Z]) were significantly and consistently higher in the circulation of MFGM+ versus Control groups. A similar trend was observed in rat prefrontal cortex, although no significant separation of the brain lipidome was demonstrated. Conclusion: bMFGM-enriched diet alters plasma phospholipid composition in rodents, predominantly increasing sphingomyelin levels in the systemic circulation with some similar, but non-significant, trends in central regions of the brain. These changes may contribute to the beneficial effects of dietary bMFGM on neurodevelopment during early life.

Published
2022
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4. Allergen risk assessment: Food intake levels of the general population represent those of food allergic patients

Author

Anouska D. Michelsen-Huisman, Geert F. Houben, Anne M van Dijk, Harmieke van Os-Medendorp, Carina M. Rubingh, W. Marty Blom, André C. Knulst, Sabina Bijlsma, and Astrid G. Kruizinga

Subjects
Male, Food intake, Population, Toxicology, medicine.disease_cause, Risk Assessment, Food group, Cohort Studies, 03 medical and health sciences, 0404 agricultural biotechnology, Allergen, Environmental health, medicine, Humans, Matched sample, education, Risk management, 030304 developmental biology, 0303 health sciences, education.field_of_study, Adult patients, business.industry, digestive, oral, and skin physiology, 04 agricultural and veterinary sciences, General Medicine, Allergens, 040401 food science, Female, Risk assessment, business, Food Hypersensitivity, Food Science
Abstract

Unintentional intake of allergens through food products poses a daily risk for allergic patients. Models estimating the risk of reactions mostly use intake data from general population surveys. Our study evaluates the comparability of food intake levels in the general population to those in the food allergic population. Data were collected by a 24-h recall method on 2 non-consecutive days in 38 cow's milk and/or hen's egg and 35 peanut and/or tree nut allergic adult patients. All products were assigned to food groups previously developed for allergen risk assessment. Food intake distributions from the allergic populations and a matched sample from the Dutch National Food Consumption Survey were compared, and risk assessments were performed. Food intake data was obtained for 92% of the food groups. Comparison of the intake showed no statistically significant differences between either of the two allergic populations and the general population. Consequently, only small variations in estimated risks were found, that would not result in different risk management decisions. In conclusion, food intake data from the general population can be used for food allergen risk assessment and will not lead to a relevant under- or overestimation of the risk for the food allergic population.

Published
2020

5. Evaluation of chitotriosidase as a biomarker for adipose tissue inflammation in overweight individuals and type 2 diabetic patients

Author

Janna A. van Diepen, Jolein Gloerich, Rinke Stienstra, Lars Verschuren, Anouk Suppers, Cees J. Tack, Ron A. Wevers, Alain J. van Gool, Roel Tans, and Sabina Bijlsma

Subjects
Male, medicine.medical_specialty, Stromal cell, Endocrinology, Diabetes and Metabolism, medicine.medical_treatment, Adipose tissue macrophages, Medicine (miscellaneous), Adipose tissue, Other Research Radboud Institute for Molecular Life Sciences [Radboudumc 0], 030209 endocrinology & metabolism, Inflammation, Type 2 diabetes, Voeding, Metabolisme en Genomica, 03 medical and health sciences, All institutes and research themes of the Radboud University Medical Center, 0302 clinical medicine, Insulin resistance, Voeding, Internal medicine, medicine, Life Science, Humans, RNA, Messenger, 030212 general & internal medicine, Nutrition, Aged, Nutrition and Dietetics, business.industry, Insulin, nutritional and metabolic diseases, Metabolic Disorders Radboud Institute for Molecular Life Sciences [Radboudumc 6], Middle Aged, Overweight, Disorders of movement Donders Center for Medical Neuroscience [Radboudumc 3], medicine.disease, Metabolism and Genomics, Hexosaminidases, Endocrinology, Adipose Tissue, Diabetes Mellitus, Type 2, Metabolisme en Genomica, Biomarker (medicine), Nutrition, Metabolism and Genomics, Female, medicine.symptom, business, Biomarkers
Abstract

Background: Overweight and obesity can lead to adipose tissue inflammation, which causes insulin resistance and on the long-term type 2 diabetes mellitus (T2D). The inflammatory changes of obese-adipose tissue are characterized by macrophage infiltration and activation, but validated circulating biomarkers for adipose tissue inflammation for clinical use are still lacking. One of the most secreted enzymes by activated macrophages is chitotriosidase (CHIT1). Objective: To test whether circulating CHIT1 enzymatic activity levels reflect adipose tissue inflammation. Methods: Plasma and adipose tissue samples of 105 subjects (35 lean, 37 overweight, and 33 T2D patients) were investigated. CHIT1 mRNA levels were determined in adipose tissue-resident innate immune cells. CHIT1 mRNA levels, protein abundance, and plasma enzymatic activity were subsequently measured in adipose tissue biopsies and plasma of control subjects with varying levels of obesity and adipose tissue inflammation as well as in T2D patients. Results: In adipose tissue, CHIT1 mRNA levels were higher in stromal vascular cells compared to adipocytes, and higher in adipose tissue-residing macrophages compared to circulating monocytes (p < 0.001). CHIT1 mRNA levels in adipose tissue were enhanced in overweightcompared to lean subjects and even more in T2D patients (p < 0.05). In contrast, plasma CHIT1 enzymatic activity did not differ between lean, overweight subjects and T2D patients. A mutation of the CHIT1 gene decreases plasma CHIT1 activity. Conclusions: CHIT1 is expressed by adipose tissue macrophages and expression is higher in overweight subjects and T2D patients, indicating its potential as tissue biomarker for adipose tissue inflammation. However, these differences do not translate into different plasma CHIT1 activity levels. Moreover, a common CHIT1 gene mutation causing loss of plasma CHIT1 activity interferes with its use as a biomarker of adipose tissue inflammation. These results indicate that plasma CHIT1 activity is of limited value as a circulating biomarker for adipose tissue inflammation in human subjects.

Published
2018
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6. The possibilities of the use of N-of-1 and do-it-yourself trials in nutritional research

Author

Tanja Krone, Robin van Stokkum, Wilrike J. Pasman, Sabina Bijlsma, Nard D. S. Clabbers, and Ruud Boessen

Subjects
Computer science, Nutritional Sciences, Physiology, Normal Distribution, Inference, computer.software_genre, law.invention, Bayes' theorem, 0302 clinical medicine, Mathematical and Statistical Techniques, Randomized controlled trial, law, Medicine and Health Sciences, Nutritional Physiological Phenomena, Public and Occupational Health, 030212 general & internal medicine, Multidisciplinary, Simulation and Modeling, 05 social sciences, Statistics, Linear model, Metaanalysis, Physiological Parameters, Research Design, Physical Sciences, Medicine, Research Article, Mixed model, Drug Research and Development, Science, Bayesian probability, Machine learning, Bayesian inference, Research and Analysis Methods, 050105 experimental psychology, Normal distribution, 03 medical and health sciences, Meta-Analysis as Topic, Frequentist inference, Weight Loss, Humans, 0501 psychology and cognitive sciences, Computer Simulation, Clinical Trials, Statistical Methods, Pharmacology, business.industry, Body Weight, Biology and Life Sciences, Bayes Theorem, Physical Activity, Probability Theory, Probability Distribution, Randomized Controlled Trials, Sample size determination, Sample Size, Mixed effects, Linear Models, Artificial intelligence, Clinical Medicine, business, computer, Mathematics
Abstract

Background. N-of-1 designs gain popularity in nutritional research because of the improving technological possibilities, practical applicability and promise of increased accuracy and sensitivity, especially in the field of personalized nutrition. This move asks for a search of applicable statistical methods. Objective. To demonstrate the differences of three popular statistical methods in analyzing treatment effects of data obtained in N-of-1 designs. Method. We compare Individual-participant data meta-analysis, frequentist and Bayesian linear mixed effect models using a simulation experiment. Furthermore, we demonstrate the merits of the Bayesian model including prior information by analyzing data of an empirical study on weight loss. Results. The linear mixed effect models are to be preferred over the meta-analysis method, since the individual effects are estimated more accurately as evidenced by the lower errors, especially with lower sample sizes. Differences between Bayesian and frequentist mixed models were found to be small, indicating that they will lead to the same results without including an informative prior. Conclusion. For empirical data, the Bayesian mixed model allows the inclusion of prior knowledge and gives potential for population based and personalized inference.

Published
2019

7. A Unique Personalized Nutrition Program Facilitates Lifestyle Behavior Changes: Novel Insights from HABIT's Personalized Approach to Health (PATH) Study (P15-020-19)

Author

Suzan Wopereis, Martien P. M. Caspers, Barbara L. Winters, Kristin M Nieman, Tanja Krone, Sabina Bijlsma, Barbara D Anderson, Joshua C. Anthony, and Tim J. van den Broek

Subjects
Self-efficacy, Nutrition and Dietetics, Knowledge management, Life style, business.industry, media_common.quotation_subject, Medicine (miscellaneous), Health outcomes, Quality of life (healthcare), Personalized nutrition, Nutrient-Gene Interactions, Habit, Psychology, business, Lifestyle behavior, Food Science, media_common, PATH (variable)
Abstract

OBJECTIVES: A key to a successful personalized nutrition (PN) strategy is tailoring the behavior intervention to achieve sustained behavior change consistent with desired health outcomes. The objective of this study was to evaluate the impact of a digitally-delivered, systems biology-based PN program (Habit, LLC, Oakland, CA), that included nutrition and behavior advice, and meals. METHODS: In this single-arm, multi-phase, open-label study (clinicaltrials.gov: NCT03424395), participants (n = 107; 67% female), 30–59 years of age, were provided a Fitbit® Activity Tracker and instructions to complete an at-home kit that included collection of DNA and capillary blood before and after (30 and 120 min) consuming a mixed macronutrient challenge beverage. Lifestyle behavior data and activity levels were collected at baseline. Participants completed a 10-week control phase and a 10-week PN program intervention phase that included tailored nutrition and behavior advice, and meals (2 meals/day, 5 days/week). Validated quality of life, perceived stress, diet self-efficacy, and eating behavior questionnaires were administered to assess behavior before and after the intervention. Data from 73 compliant participants (66% female) were included in the analysis. Anthropometric and biological results were used to categorize participants into subgroups including Protein Seekers (PS) and Range Seekers (RS). RESULTS: Participants reported feeling fuller faster after the intervention, relative to before (P = 0.002), which could be linked to the dietary recommendations and behavior advice. Analysis by gender showed men reported more control over their eating patterns during negative events at baseline, compared to women (P = 0.005). This difference was not evident at the end of the intervention with women reporting slightly more, and men slightly less control. PS entered the study with a higher weight and BMI (P

Published
2019

8. A Novel Personalized Nutrition Program Improves Health and Lifestyle Behavior: Results from the Habit PATH Study

Author

Suzan Wopereis, Martien P. M. Caspers, Kristin M Nieman, Tanja Krone, Sabina Bijlsma, Tim J. van den Broek, Joshua C. Anthony, Barbara D Anderson, and Barbara L. Winters

Subjects
Personalized nutrition, media_common.quotation_subject, Path (graph theory), Applied psychology, Genetics, Habit, Psychology, Molecular Biology, Biochemistry, Lifestyle behavior, Biotechnology, media_common
Published
2019
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9. A Novel Personalized Systems Nutrition Program Improves Dietary Patterns, Lifestyle Behaviors and Health-Related Outcomes: Results from the Habit Study

Author

Joshua C. Anthony, Tim J. van den Broek, Kristin M Nieman, Martien P. M. Caspers, Barbara D Anderson, Suzan Wopereis, Barbara L. Winters, Tanja Krone, Iris M de Hoogh, and Sabina Bijlsma

Subjects
Male, 0301 basic medicine, Calorie, Saturated fat, Health Behavior, 0302 clinical medicine, Medicine, TX341-641, personalized nutrition, media_common, education.field_of_study, Nutrition and Dietetics, Behavior change, systems biology, Middle Aged, Female, Dietary Proteins, Nutrition Therapy, Adult, medicine.medical_specialty, media_common.quotation_subject, Population, Nutritional Status, 030209 endocrinology & metabolism, Article, 03 medical and health sciences, healthy lifestyle, dietary intervention, Internal medicine, Dietary Carbohydrates, Humans, education, Exercise, Life Style, Aged, 030109 nutrition & dietetics, Nutrition. Foods and food supply, business.industry, Body Weight, mixed meal tolerance test, Health related, Feeding Behavior, Dietary Fats, Diet, Personalized nutrition, Habit, Energy Intake, business, Lifestyle habits, Food Science
Abstract

Personalized nutrition may be more effective in changing lifestyle behaviors compared to population-based guidelines. This single-arm exploratory study evaluated the impact of a 10-week personalized systems nutrition (PSN) program on lifestyle behavior and health outcomes. Healthy men and women (n = 82) completed the trial. Individuals were grouped into seven diet types, for which phenotypic, genotypic and behavioral data were used to generate personalized recommendations. Behavior change guidance was also provided. The intervention reduced the intake of calories (−256.2 kcal, p &lt, 0.0001), carbohydrates (−22.1 g, 0.0039), sugar (−13.0 g, 0.0001), total fat (−17.3 g, 0.0001), saturated fat (−5.9 g, p = 0.0003) and PUFA (−2.5 g, p = 0.0065). Additionally, BMI (−0.6 kg/m2, 0.0001), body fat (−1.2%, p = 0.0192) and hip circumference (−5.8 cm, 0.0001) were decreased after the intervention. In the subgroup with the lowest phenotypic flexibility, a measure of the body’s ability to adapt to environmental stressors, LDL (−0.44 mmol/L, p = 0.002) and total cholesterol (−0.49 mmol/L, 0.0001) were reduced after the intervention. This study shows that a PSN program in a workforce improves lifestyle habits and reduces body weight, BMI and other health-related outcomes. Health improvement was most pronounced in the compromised phenotypic flexibility subgroup, which indicates that a PSN program may be effective in targeting behavior change in health-compromised target groups.

Published
2021
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10. Metabolic Profiling Reveals Differences in Plasma Concentrations of Arabinose and Xylose after Consumption of Fiber-Rich Pasta and Wheat Bread with Differential Rates of Systemic Appearance of Exogenous Glucose in Healthy Men

Author

Roel J. Vonk, Leo van Stee, Marion G. Priebe, Ivana Bobeldijk, A.J. Pantophlet, Johanna H. M. Stroeve, Coby Eelderink, Suzan Wopereis, and Sabina Bijlsma

Subjects
0301 basic medicine, Arabinose, Dietary Fiber, Male, ALPHA-AMYLASE, Metabolite, ACTIVE CELIAC-DISEASE, Medicine (miscellaneous), Xylose, Wheat bran, chemistry.chemical_compound, Starch digestion, Arabinoxylan, Food science, Triticum, GLYCEMIC RESPONSE, Meal, Nutrition and Dietetics, Cross-Over Studies, food and beverages, Bread, Life Triskelion BV, ELSS - Earth, Life and Social Sciences TNO Bedrijven, Postprandial Period, MICROBIOTA, Postprandial, CARDIOVASCULAR-DISEASE, OBESITY, Healthy men, Healthy Living, wheat bran, ARABINOXYLANS, Postprandial metabolomics, Pasta, bread, Biology, 03 medical and health sciences, Young Adult, Humans, Food and Nutrition, postprandial metabolomics, Nutrition, pasta, Bran, healthy men, HUMAN ILEAL, ADULTS, Bioavailability, arabinoxylan, 030104 developmental biology, Glucose, chemistry, starch digestion, MSB - Microbiology and Systems Biology RAPID - Risk Analysis for Products in Development MHR - Metabolic Health Research ARF - Analytical Research (Food), TOLERANCE TEST, Food Analysis
Abstract

Background: The consumption of products rich in cereal fiber and with a low glycemic index is implicated in a lower risk of metabolic diseases. Previously, we showed that the consumption of fiber-rich pasta compared with bread resulted in a lower rate of appearance of exogenous glucose and a lower glucose clearance rate quantified with a dual-isotope technique, which was in accordance with a lower insulin and glucose-dependent insulinotropic polypeptide response.Objective: To gain more insight into the acute metabolic consequences of the consumption of products resulting in differential glucose kinetics, postprandial metabolic profiles were determined.Methods: In a crossover study, 9 healthy men (mean +/- SEM age: 21 +/- 0.5 y; mean SEM body mass index (kg/m(2)): 22 +/- 0.5] consumed wheat bread (132 g) and fresh pasta (119 g uncooked) enriched with wheat bran (10%) meals. A total of 134 different metabolites in postprandial plasma samples (at -5, 30, 60, 90, 120, and 180 min) were quantified by using a gas chromatography mass spectrometry based metabolomics approach (secondary outcomes). Two-factor ANOVA and advanced multivariate statistical analysis (partial least squares) were applied to detect differences between both food products.Results: Forty-two different postprandial metabolite profiles were identified, primarily representing pathways related to protein and energy metabolism, which were on average 8% and 7% lower after the men consumed pasta rather than bread, whereas concentrations of arabinose and xylose were 58% and 53% higher, respectively. Arabinose and xylose are derived from arabinoxylans, which are important components of wheat bran. The higher bioavailability of arabinose and xylose after pasta intake coincided with a lower rate of appearance of glucose and amino acids. We speculate that this higher bioavailability is due to higher degradation of arabinoxylans by small intestinal microbiota, facilitated by the higher viscosity of arabinoxylans after pasta intake than after bread intake.Conclusion: This study suggests that wheat bran, depending on the method of processing, can increase the viscosity of the meal bolus in the small intestine and interfere with macronutrient absorption in healthy men, thereby influencing postprandial glucose and insulin responses. This trial was registered at www.controlled-trials.com as ISRCTN42106325.

Published
2017
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11. A Novel Personalized Nutrition Program Improves Health and Lifestyle Behaviors: Subgroup Analysis Results from Habit’s Personalized Approaches to Health (PATH) Study (P15-019-19)

Author

Tanja Krone, Kristin M Nieman, Suzan Wopereis, Sabina Bijlsma, Barbara D Anderson, Joshua C. Anthony, Barbara L. Winters, Tim J. van den Broek, and Martien P. M. Caspers

Subjects
Gerontology, Nutrition and Dietetics, Life style, media_common.quotation_subject, Hip region, Medicine (miscellaneous), Subgroup analysis, Ascorbic acid, Muscle mass, Nutrient-Gene Interactions, Personalized nutrition, LDL Cholesterol Lipoproteins, Habit, Psychology, Food Science, media_common
Abstract

OBJECTIVES: This study evaluates the impact of a digitally-delivered systems biology-based personalized nutrition (PN) program (Habit LLC, Oakland, CA), that included nutrition and behavior advice, and meals. METHODS: In this single-arm, multi-phase, open-label study (clinicaltrials.gov: NCT03424395), participants (n = 107; 67% female) were provided a Fitbit® Activity Tracker and completed an at-home kit that included collection of DNA and capillary blood before and after (30 and 120 min) consuming a mixed macronutrient challenge beverage. Participants completed a 10-week run-in and 10-week PN program intervention phase. The intervention included personalized nutrition and behavior advice and meals (2 meals/day; 5 days/week) tailored to dietary subgroups. Here we report on changes in diet, anthropometrics, and biomarkers of two subgroups (Range Seekers [RS] and Protein Seekers [PS]) that differed in anthropometrics and biological measures at baseline and were provided different dietary recommendations. RESULTS: At baseline, there were no differences between groups in nutrients assessed, however, compared to RS (n = 48), PS (n = 22) had higher BMI, weight, body fat %, waist and hip circumference (all P

Published
2019
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