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17 results on '"Sayers, Rebekah"'

1. A multiplex protein panel assay for severity prediction and outcome prognosis in patients with COVID-19: An observational multi-cohort study

Author

Wang, Ziyue, Cryar, Adam, Lemke, Oliver, Tober-Lau, Pinkus, Ludwig, Daniela, Helbig, Elisa Theresa, Hippenstiel, Stefan, Sander, Leif-Erik, Blake, Daniel, Lane, Catherine S., Sayers, Rebekah L., Mueller, Christoph, Zeiser, Johannes, Townsend, StJohn, Demichev, Vadim, Mülleder, Michael, Kurth, Florian, Sirka, Ernestas, Hartl, Johannes, and Ralser, Markus

Published
2022
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2. Proteomic profiling of processing-induced modifications to food proteins

Author

Sayers, Rebekah, Barran, Perdita, and Mills, Elizabeth Clare

Subjects
616.97, Allergen, Proteomics, Food allergy, Mass spectrometry, Peanut, Thermal processing, Immunotherapy
Abstract

Peanut allergy typically results from sensitisation to one or more integral seed storage proteins; Ara h 1, 3 or 2/6. Reactions can be triggered by as little as 3 mg protein in 10% of allergic individuals and are often severe, inducing anaphylaxis which can be fatal. Accidental exposure through unintended presence can therefore be hazardous and foods must be labelled appropriately. Thermal processing is one of the main factors affecting protein properties in food systems, including the formation of Maillard reaction products. Research has suggested a link between the allergenicity of foods and cooking methods employed. A systematic study was undertaken to assess the thermal dependence of these hazard proteins, focusing on changes to solubility and chemical modifications which may alter IgE binding. Proteomic profiling was used to assess the allergenic content of peanut products and develop alternative methods for allergen analysis to support evidence-based application of precautionary allergen labelling. Runner variety peanuts were processed (boiled, fried, roasted) and their protein content determined. Proteins extracts were characterised by 1D- and 2D-polyacrylamide gel electrophoresis, including differential in-gel electrophoresis. Proteomic profiling was undertaken using label-free analysis to assess allergen composition and investigate the formation of Maillard reaction products on the most clinically relevant proteins. Peanut allergen peptide targets were then identified and used to develop label-based quantitation methods and applied to (i) investigate effects of processing on peptide targets and (ii) determine peanut in chocolate products in comparison with a commercial ELISA kit. Orthogonal studies were performed using serum samples from peanut allergic patients obtained from the Manchester Respiratory, Allergy and Thoracic Surgery (ManARTS) Biobank. Patient IgE reactivity to peanut and processed peanut products was assessed by immunoblotting, inhibition ELISA and mediator release assays. Protein solubility was reduced by thermal processing and processed protein required harsh denaturing conditions for extraction. Qualitative analysis highlighted decreased solubility of key allergens, modifications and aggregation after heating. Proteomic profiling identified and quantified different isoforms of the major peanut allergens. The protein content of processed peanuts was reduced by boiling, specifically the 2S albumins, which transferred into the cooking water. The performance of peptides selected for targeted MRM experiments was influenced by thermal processing and the presence of cocoa phenolics. Ara h 2 peptides flanked by arginine were thermostable and may prove more reliable for quantification. Application of microfluidic separation enhanced the efficiency of target ionisation in complex matrices acquiring important sensitivity gains. Maillard modifications to clinically relevant proteins Ara h 2/6 were found within IgE binding domains in raw and processed peanuts. IgE reactivity studies confirmed reduced IgE binding capacity of extensively boiled peanut and hydrolysed protein, but this did not correlate to a reduction in mediator release in poly-sensitised patients. While effective extraction limits the efficacy of analyses, buffers used in MS analyses are more robust in analysing processed protein. Proteomic profiling provides a means of characterising and profiling of allergenic proteins including food ingredients used in clinical applications. Peptides selected for targeted analyses should be validated to assess their suitability in model foods. Cooking waters collected from extensively boiled peanuts may provide an alternative and safer immunotherapy agent for patients predominantly sensitised to Ara h 2/6.

Published
2017

5. A multiplex protein panel assay determines disease severity and is prognostic about outcome in COVID-19 patients

Author

Wang, Ziyue, primary, Cryar, Adam, additional, Lemke, Oliver, additional, Ludwig, Daniela, additional, Tober-Lau, Pinkus, additional, Helbig, Elisa Theresa, additional, Blake, Daniel, additional, Lane, Catherine S, additional, Sayers, Rebekah L, additional, Mueller, Christoph, additional, Zeiser, Johannes, additional, Townsend, StJohn, additional, Demichev, Vadim, additional, Mülleder, Michael, additional, Kurth, Florian, additional, Sirka, Ernestas, additional, Hartl, Johannes, additional, and Ralser, Markus, additional

Published
2021
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6. Cross-Laboratory Standardization of Preclinical Lipidomics Using Differential Mobility Spectrometry and Multiple Reaction Monitoring

Author

Ghorasaini, Mohan, primary, Mohammed, Yassene, additional, Adamski, Jerzy, additional, Bettcher, Lisa, additional, Bowden, John A., additional, Cabruja, Matias, additional, Contrepois, Kévin, additional, Ellenberger, Mathew, additional, Gajera, Bharat, additional, Haid, Mark, additional, Hornburg, Daniel, additional, Hunter, Christie, additional, Jones, Christina M., additional, Klein, Theo, additional, Mayboroda, Oleg, additional, Mirzaian, Mina, additional, Moaddel, Ruin, additional, Ferrucci, Luigi, additional, Lovett, Jacqueline, additional, Nazir, Kenneth, additional, Pearson, Mackenzie, additional, Ubhi, Baljit K., additional, Raftery, Daniel, additional, Riols, Fabien, additional, Sayers, Rebekah, additional, Sijbrands, Eric J. G., additional, Snyder, Michael P., additional, Su, Baolong, additional, Velagapudi, Vidya, additional, Williams, Kevin J., additional, de Rijke, Yolanda B., additional, and Giera, Martin, additional

Published
2021
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8. Mast cell activation test in the diagnosis of allergic disease and anaphylaxis

Author

Bahri, Rajia, Custovic, Adnan, Korošec, Peter, Tsoumani, Marina, Barron, Martin, Wu, Jiakai, Sayers, Rebekah, Weimann, Alf, Ruiz-Garcia, Monica, Patel, Nandinee, and Šilar, Mira

Subjects
food hypersensitivity, immunologic tests, BAT, udc:616-097, mast cells, mast cell activation test, anafilaksija, alergija in imunologija -- diagnostika, allergy and immunology -- diagnosis, basophil activation test, preobčutljivost za hrano, test aktivacije bazofilcev, test aktivacije mastocitov, anaphylaxis, imunološki testi, mastociti
Abstract

Background. Food allergy is an increasing public health issue and the commonest cause of life-threatening anaphylactic reactions. Conventional allergy tests assess for the presence of allergen-specific IgE, significantly overestimating the rate of true clinical allergy resulting in over-diagnosis and adverse impact on health-related quality of life. Objective. To undertake initial validation and assessment of a novel diagnostic tool, the mast cell activation test (MAT). Methods. Primary human mast cells (hMCs) were generated from peripheral blood precursors, and sensitized using patient sera and then incubated with allergen. Mast cell degranulation was assessed by flow cytometry and mediator release. We compared the diagnostic performance of MAT to existing diagnostic tools to assess in a cohort of peanut-sensitized individuals undergoing double-blind, placebo-controlled challenge. Results. hMCs sensitized with sera from peanut, grass pollen and hymenoptera- (wasp venom) allergic patients demonstrated allergen-specific and dose-dependent degranulation by both expression of surface activation markers (CD63 and CD107a) and functional assays (prostaglandins D2 and ß-hexosaminidase release). In this cohort of peanut-sensitized individuals, MAT was found to have superior discrimination performance compared to other testing modalities including component-resolved diagnostics and basophil activation test. Using functional principle component analysis, we identified 5 clusters or patterns of reactivity in the resulting dose-response curves, which at preliminary analysis corresponded to the reaction phenotypes seen at challenge. Conclusion. MAT is a robust tool which may confer superior diagnostic performance compared to existing allergy diagnostics, and may be useful to explore differences in effector cell function between basophils and mast cells during allergic reactions.

Published
2020

9. Cross-Laboratory Standardization of Preclinical Lipidomics Using Differential Mobility Spectrometry and Multiple Reaction Monitoring

Author

Ghorasaini, Mohan, Mohammed, Yassene, Adamski, Jerzy, Bettcher, Lisa, Bowden, John A., Cabruja, Matias, Contrepois, Kévin, Ellenberger, Mathew, Gajera, Bharat, Haid, Mark, Hornburg, Daniel, Hunter, Christie, Jones, Christina M., Klein, Theo, Mayboroda, Oleg, Mirzaian, Mina, Moaddel, Ruin, Ferrucci, Luigi, Lovett, Jacqueline, Nazir, Kenneth, Pearson, Mackenzie, Ubhi, Baljit K., Raftery, Daniel, Riols, Fabien, Sayers, Rebekah, Sijbrands, Eric J.G., Snyder, Michael P., Su, Baolong, Velagapudi, Vidya, Williams, Kevin J., De Rijke, Yolanda B., Giera, Martin, Ghorasaini, Mohan, Mohammed, Yassene, Adamski, Jerzy, Bettcher, Lisa, Bowden, John A., Cabruja, Matias, Contrepois, Kévin, Ellenberger, Mathew, Gajera, Bharat, Haid, Mark, Hornburg, Daniel, Hunter, Christie, Jones, Christina M., Klein, Theo, Mayboroda, Oleg, Mirzaian, Mina, Moaddel, Ruin, Ferrucci, Luigi, Lovett, Jacqueline, Nazir, Kenneth, Pearson, Mackenzie, Ubhi, Baljit K., Raftery, Daniel, Riols, Fabien, Sayers, Rebekah, Sijbrands, Eric J.G., Snyder, Michael P., Su, Baolong, Velagapudi, Vidya, Williams, Kevin J., De Rijke, Yolanda B., and Giera, Martin

Abstract

Modern biomarker and translational research as well as personalized health care studies rely heavily on powerful omics' technologies, including metabolomics and lipidomics. However, to translate metabolomics and lipidomics discoveries into a high-throughput clinical setting, standardization is of utmost importance. Here, we compared and benchmarked a quantitative lipidomics platform. The employed Lipidyzer platform is based on lipid class separation by means of differential mobility spectrometry with subsequent multiple reaction monitoring. Quantitation is achieved by the use of 54 deuterated internal standards and an automated informatics approach. We investigated the platform performance across nine laboratories using NIST SRM 1950-Metabolites in Frozen Human Plasma, and three NIST Candidate Reference Materials 8231-Frozen Human Plasma Suite for Metabolomics (high triglyceride, diabetic, and African-American plasma). In addition, we comparatively analyzed 59 plasma samples from individuals with familial hypercholesterolemia from a clinical cohort study. We provide evidence that the more practical methyl-tert-butyl ether extraction outperforms the classic Bligh and Dyer approach and compare our results with two previously published ring trials. In summary, we present standardized lipidomics protocols, allowing for the highly reproducible analysis of several hundred human plasma lipids, and present detailed molecular information for potentially disease relevant and ethnicity-related materials.

Published
2021

10. The Effect of the Food Matrix on the In Vitro Bio‐Accessibility and IgE Reactivity of Peanut Allergens

Author

Rao, Huan, primary, Baricevic, Ivona, additional, Bernard, Hervé, additional, Smith, Frances, additional, Sayers, Rebekah, additional, Balasundaram, Anuhradha, additional, Costello, Carol Ann, additional, Padfield, Philip, additional, Semic‐Jusufagic, Aida, additional, Simpson, Angela, additional, Adel‐Patient, Karine, additional, Xue, Wentong, additional, and Mills, E. N. Clare, additional

Published
2020
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11. Microfluidic Separation Coupled to Mass Spectrometry for Quantification of Peanut Allergens in a Complex Food Matrix

Author

Sayers, Rebekah L., primary, Gethings, Lee A., additional, Lee, Victoria, additional, Balasundaram, Anuradha, additional, Johnson, Philip E., additional, Marsh, Justin A., additional, Wallace, Antonietta, additional, Brown, Helen, additional, Rogers, Adrian, additional, Langridge, James I., additional, and Mills, E. N. Clare, additional

Published
2017
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12. Abstracts from the Food Allergy and Anaphylaxis Meeting 2016

Author

Pouessel, Guillaume, Claverie, Claire, Labreuche, Julien, Renaudin, Jean-Marie, Dorkenoo, Aimée, Eb, Mireille, Moneret-Vautrin, Anne, Deschildre, Antoine, Leteurtre, Stephane, Grabenhenrich, Linus, Worm, Margitta, Dölle, Sabine, Scherer, Kathrin, Hutteger, Isidor, Christensen, Morten, Bindslev-Jensen, Carsten, Mortz, Charlotte, Eller, Esben, Kjaer, Henrik F, Carneiro-Leão, Leonor, Badas, Jenny, Coimbra, Alice, Levy, Dikla P, Ben-Shoshan, Moshe, Rimon, Ayelet, Benor, Shira, Arends, Nicolette J T, Edelbroek, Nikki, de Groot, Hans, Emons, Joyce A M, Brand, H. K A, Verhoeven, Dirk, van Veen, Leonieke N, de Jong, Nicolette W, Noh, Geunwoong, Jang, Eun H, Pascal, Mariona, Dominguez, Olga, Piquer, Mònica, Alvaro, Montserrat, Jimenez-Feijoo, Rosa, Lozano, Jaime, Machinena, Adriana, del Mar Folqué, Maria, Giner, Maria T, Plaza, Ana M, Turner, Paul, Patel, Nandinee, Vazquez-Ortiz, Marta, Lindsley, Sarah, Walker, Lucy, Rosenberg, Simon, Mari, Adriano, Alessandri, Claudia, Giangrieco, Ivana, Tuppo, Lisa, Rafaiani, Chiara, Mitterer, Georg, Ciancamerla, Michela, Ferrara, Rosetta, Bernardi, Maria L, Zennaro, Danila, Tamburrini, Maurizio, Ciardiello, Maria A, Harwanegg, Christian, Fernandez, Antonio, Selb, Regina, Egenmann, Philippe, Epstein, Michelle, Hoffmann-Sommergruber, Karin, Koning, Frits, Lovik, Martinus, Clare Mills, E. N, Moreno, Javier, van Loveren, Henk, Wal, Jean-Michel, Diesner, Susanne, Bergmayr, Cornelia, Pfitzner, Barbara, Assmann, Vera E, Starkl, Philipp, Endesfelder, David, Eiwegger, Thomas, Szepfalusi, Zsolt, Fehrenbach, Heinz, Jensen-Jarolim, Erika, Hartmann, Anton, Pali-Schöll, Isabella, Untersmayr, Eva, Wille, Soren, Meyer, Peter, Klingebiel, Caroline, Lidholm, Jonas, Ehrenberg, Angelica, Östling, Jonas, Cleach, Isabelle, Mège, Jean-Louis, Vitte, Joana, Aina, Roberta, Dubiela, Pawel, Pfeifer, Sabine, Bublin, Merima, Radauer, Christian, Humeniuk, Piotr, Kabasser, Stefan, Asero, Riccardo, Bogas, Gador, Gomez, Francisca, Campo, Paloma, Salas, Maria, Doña, Inmaculada, Barrionuevo, Esther, Guerrero, Maria A, Mayorga, Cristobalina, Prieto, Ana, Barber, Domingo, Torres, Maria J, Jamin, Annette, Wangorsch, Andrea, Ballmer, Barbara, Vieths, Stefan, Scheurer, Stephan, Apostolovic, Danijela, Mihailovic, Jelena, Krstic, Maja, Starkhammar, Maria, Velickovic, Tanja C, Hamsten, Carl, van Hage, Marianne, van Erp, Francine C, Knol, Edward F, Kansen, Hannah M, Pontoppidan, Bo, Meijer, Yolanda, van der Ent, Cornelis K, Knulst, André C, Sayers, Rebekah, Brown, Helen, Custovic, Adnan, Simpson, Angela, Mills, Claire, Schulz, Juliane, Akkerdaas, Jaap, Totis, Muriel, Capt, Annabelle, Herouet-Guicheney, Corinne, van Ree, Ronald, Banerjee, Tushar, Banerjee, Antima, Claude, Mathilde, Bouchaud, Grégory, Lupi, Roberta, Castan, Laure, Tranquet, Olivier, Denery-Papini, Sandra, Bodinier, Marie, Brossard, Chantal, De Poi, Rosella, Gritti, Elisa, De Dominicis, Emiliano, Popping, Bert, de Laureto, Patrizia P, Palosuo, Kati, Kukkonen, Anna K, Pelkonen, Anna, Mäkelä, Mika, Lee, Nanju A, Rost, Johanna, Muralidharan, Sridevi, Campbell, Dianne, Mehr, Sam, Nock, Catherine, Baumert, Joseph, Taylor, Steve, Mastrorilli, Carla, Tripodi, Salvatore, Caffarelli, Carlo, Perna, Serena, Di Rienzo Businco, Andrea, Sfika, Ifigenia, Dondi, Arianna, Bianchi, Annamaria, Dascola, Carlotta P, Ricci, Giampaolo, Cipriani, Francesca, Maiello, Nunzia, del Giudice, Michele M, Frediani, Tullio, Frediani, Simone, Macrì, Francesco, Pistoletti, Chiara, Iacono, Iride D, Patria, Maria F, Varin, Elena, Peroni, Diego, Comberiati, Pasquale, Chini, Loredana, Moschese, Viviana, Lucarelli, Sandra, Bernardini, Roberto, Pingitore, Giuseppe, Pelosi, Umberto, Olcese, Roberta, Moretti, Matteo, Cirisano, Anastasia, Faggian, Diego, Travaglini, Alessandro, Plebani, Mario, Verga, Maria C, Calvani, Mauro, Giordani, Paolo, Matricardi, Paolo M, Ontiveros, Noe, Cabrera-Chavez, Francisco, Galand, Julie, Beaudouin, Etienne, Pineau, Florence, Sakai, Shinobu, Matsunaga, Kayoko, Teshima, Reiko, Larré, Colette, Denery, Sandra, Tschirner, Sebastian, Trendelenburg, Valérie, Schulz, Gabriele, Niggemann, Bodo, Beyer, Kirsten, Bouferkas, Youcef, Belabbas, Younes, Saidi, Djamel, Kheroua, Omar, Mecherfi, Kamel E E, Guendouz, Malika, Haddi, Abir, Kaddouri, Hanane, Amaral, Luis, Pereira, Ana, Rodrigues, Susana, Datema, Mareen, Jongejan, Laurian, Clausen, Michael, Knulst, Andre, Papadopoulos, Nikolaos, Kowalski, Marek, de Blay, Frédéric, Zwinderman, Aeilko, Hoffman-Sommergruber, Karin, Ballmer-Weber, Barbara, Fernandez-Rivas, Montserrat, Deng, Shan, Yin, Jia, Eisenmann, Charlotte, Nassiri, Maria, Reinert, Rabea, van der Valk, Johanna P M, van Wijk, Roy G, Vergouwe, Yvonne, Steyerberg, Ewout W, Reitsma, Marit, Wichers, Harry J, Savelkoul, Huub F J, Vlieg-Boerstra, Berber, Dubois, Anthony E J, Carolino, Fabrícia, Rodolfo, Ana, Cernadas, Josefina, Roa-Medellín, Dasha, Rodriguez-Fernandez, Ana, Navarro, Joaquín, Albendiz, Vicente, Baeza, María L, Intente-Herrero, Sonsoles, Mikkelsen, Andrea, Mehlig, Kirsten, Lissner, Lauren, Verrill, Linda, Luccioli, Stefano, van Bilsen, Jolanda, Kuper, Frieke, Wolterbeek, André, Rankouhi, Tanja R, Verschuren, Lars, Cnossen, Hilde, Jeurink, Prescilla, Garssen, Johan, Knippels, Léon, Garthoff, Jossie, Houben, Geert, Leeman, Winfried, Eleonore Pettersson, M., Schins, Afke M M, Koppelman, Gerard H, Kollen, Boudewjin J, Zubchenko, Svitlana, Kuntz, Sarah, Mérida, Pablo, Álvaro, Montserrat, Piquer, Monica, Riggioni, Carmen, Castellanos, Juan H, Jimenez, Rosa, Cap, Melanie, Drumez, Elodie, Lejeune, Stéphanie, Thumerelle, Caroline, Mordacq, Clémence, Nève, Véronique, Ricò, Sonia, Varini, Margherita, Nocerino, Rita, Cosenza, Linda, Amoroso, Antonio, Di Costanzo, Margherita, Di Scala, Carmen, Bedogni, Giorgio, Canani, Roberto B, Turner, Paul J, Poza-Guedes, Paloma, González-Pérez, Ruperto, Sánchez-Machín, Inmaculada, Matheu-Delgado, Victor, Wambre, Erik, Ballegaard, Anne-Sofie, Madsen, Charlotte, Gregersen, Juliane, Bøgh, Katrine L, Aubert, Philippe, Neunlist, Michel, Magnan, Antoine, Lozano-Ojalvo, Daniel, Pablos-Tanarro, Alba, Pérez-Rodríguez, Leticia, Molina, Elena, López-Fandiño, Rosina, Rekima, Akila, Macchiaverni, Patricia, Turfkruyer, Mathilde, Holvoet, Sebastien, Dupuis, Lénaïck, Baiz, Nour, Annesi-Maesano, Isabella, Mercenier, Annick, Nutten, Sophie, Verhasselt, Valérie, Mrakovcic-Sutic, Ines, Banac, Srdan, Sutic, Ivana, Baricev-Novakovic, Zdenka, Sutic, Ingrid, Pavisic, Valentino, Muñoz-Cano, Rosa, Jiménez-Rodríguez, Teodoríkez, Corbacho, Daniel, Roca-Ferrer, Jordi, Bartra, Joan, Bulog, Aleksandar, Micovic, Vladimir, Markiewicz, Lidia, Szymkiewicz, Agata, Szyc, Anna, Wróblewska, Barbara, Harvey, Bryan M, Harthoorn, Lucien F, Wesley Burks, A., Rentzos, Georgios, Björk, Anna-Lena B, Bengtsson, Ulf, Barber, Colin, Kalicinsky, Chrystyna, Breynaert, Christine, Coorevits, Lieve, Jansen, Cornelia, Van Hoeyveld, Erna, Verbeke, Kristin, Kochuyt, Anne-Marie, Schrijvers, Rik, Deleanu, Diana, Muntean, Adriana, Konstantakopoulou, Maria, Pasioti, Maria, Papadopoulou, Anastasia, Iliopoulou, Anna, Mikos, Nikolaos, Kompoti, Evangelia, de Castro, Eunice D, Bartalomé, Borja, Ue, Kok L, Griffiths, Elizabeth, Till, Stephen, Grimshaw, Kate, Roberts, Graham, Selby, Anna, Butiene, Indre, Larco, Jose I, Dubakiene, Ruta, Fiandor, Ana, Fiocchi, Alessandro, Papadopoulos, Nikos, Sigurdardottir, Sigurveig, Sprikkelman, Aline, Schoemaker, Anne-Fleur, Xepapadaki, Paraskevi, Keil, Thomas, Cojocariu, Zizi, Barbado, Beatriz S, Iancu, Vasti, Arroabarren, Esozia, Esarte, Marta G, Arteaga, Miren, Andrade, Mayra C, Borges, Denise, Kalil, Jorge, Bianchi, Pedro G, Agondi, Rosana C, Gupta, Rinkesh K, Sharma, Akanksha, Gupta, Kriti, Das, Mukul, Dwivedi, Premendra, Karseladze, Rusudan, Jorjoliani, Liana, Saginadze, Lali, Tskhakaia, Mariam, Basello, Katia, Piuri, Gabriele, Speciani, Attilio F, Speciani, Michela C, Camerotto, Carla, Zinno, Francesco, Pakholchuk, Olga, Nedelska, Svitlana, Pattini, Stefano, Costantino, Maria T, Peveri, Silvia, Villalta, Danilo, Savi, Eleonora, Costanzi, Andrea, Revyakina, Vera A, Kiseleva, Marina A, Kuvshinova, Elena D, Larkova, Inna A, Shekhetov, Anton A, Silva, Diana, Moreira, André, Plácido, José, van der Kleij, Hanneke, van Twuijver, Esther, Sutorius, Robbert, de Kam, Pieter-Jan, van Odijk, Jenny, Lindqvist, Helen, Lustig, Elin, Jácome, Amyra A A, Aguilar, Karla L B, Domínguez, Miguel G, Hernández, David A M, Caruso, Cristiano, Casale, Cono, Rapaccini, Gian L, Romano, Antonino, De Vitis, Italo, Cocco, Renata R, Aranda, Carolina, Mallozi, Marcia C, Motta, Jackeline F, Moraes, Lilian, Pastorino, Antonio, Rosario, Nelson, Goudouris, Ekaterini, Porto, Arnaldo, Wandalsen, Neusa F, Sarinho, Emanuel, Sano, Flavio, Solé, Dirceu, Pitsios, Constantinos, Petrodimopoulou, Maria, Papadopoulou, Ekaterini, Passioti, Maria, Kontogianni, Meropi, Adamia, Nino, Khaleva, Ekaterina, del Prado, Ana P, Du Toit, George, Krzych, Edyta, Samolinska-Zawisza, Urszula, Furmanczyk, Konrad, Tomaszewska, Aneta, Raciborski, Filip, Lipiec, Agnieszka, Samel-Kowalik, Piotr, Walkiewicz, Artur, Borowicz, Jacek, Samolinski, Boleslaw, Nano, Aimee L, Recto, Marysia, Somoza, Maria L, López, Natalia B, Alzate, Diana P, Ruano, Francisco J, Garcimartín, Maria I, Haroun, Elisa, de la Torre, Maria V, Rojas, Antonia, Onieva, Montserrat L, Canto, Gabriela, Rodrigues, Alexandra, Forno, Andreia, Cabral, António J, Gonçalves, Rute, Vorozhko, Ilya, Sentsova, Tatyana, Chernyak, Olga, Denisova, Svetlana, Ilènko, Lidia, Muhortnich, Valery, Zimmermann, Caroline, Rohrbach, Alexander, Bakhsh, Faisal R, Boudewijn, Kollen, Oomkes-Pilon, Anne-Marie, Van Ginkle, Dorien, Šilar, Mira, Jeverica, Anja, Vesel, Tina, Avčin, Tadej, Korošec, Peter, van der Valk, Johanna, Berends, Irene, Arends, Nicolette, van Maaren, Maurits, Wichers, Harry, Emons, Joyce, Dubois, Anthony, de Jong, Nicolette, Matsyura, Oksana, Besh, Lesya, Huang, Chung-Hsiung, Jan, Tong-Rong, Stiefel, Gary, Tratt, Jean, Kirk, Kerrie, Carolino, Fabricia, Arasi, Stefania, Caminiti, Lucia, Crisafulli, Giuseppe, Fiamingo, Chiara, Fresta, Jlenia, Pajno, Giovanni, Remington, Ben, Kruizinga, Astrid, Marty Blom, W., Westerhout, Joost, Bijlsma, Sabina, Baumert, Joe, Blankestijn, Mark, Otten, Henny, Klemans, Rob, Michelsen-Huisman, Anouska D, van Os-Medendorp, Harmieke, Kruizinga, Astrid G, Versluis, Astrid, van Duijn, Gert, de Zeeuw-Brouwer, H. 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Published
2017

14. How Much of a Problem Is Peanut in Ground Cumin for Individuals with Peanut Allergy?

Author

Sayers, Rebekah L., primary, Gethings, Lee, additional, Wallace, Antonietta, additional, Semic-Jusufgic, Aida, additional, Simpson, Angela, additional, Barran, Perdita, additional, Gilbert, John, additional, Senyuva, Hamide, additional, Rodgers, Adrian, additional, Bromley, Mike, additional, Walker, Michael, additional, Brown, Helen, additional, and Mills, E.N. Clare, additional

Published
2016
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17. A multiple reaction monitoring method for determining peanut (Arachis hypogea) allergens in serum using quadrupole and time-of-flight mass spectrometry

Author

Rebekah Sayers, Charlotte M Hands, Chiara Nitride, E. N. Clare Mills, Lee A. Gethings, Hands, Charlotte M., Sayers, Rebekah L., Nitride, Chiara, Gethings &amp, Lee A., and Clare Mills, E. N.

Subjects
Serum, Multiple reaction monitoring, Triple quadrupole, Arachis, Peptide, Mass spectrometry, medicine.disease_cause, 01 natural sciences, Biochemistry, Antigens, Plant/blood, Analytical Chemistry, 03 medical and health sciences, Allergen, Affinity chromatography, medicine, Humans, Peanut Hypersensitivity/blood, Peanut Hypersensitivity, Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization/methods, 030304 developmental biology, chemistry.chemical_classification, 0303 health sciences, Chromatography, Allergens/blood, Food Analysis/methods, Peanut allergen, biology, Chemistry, Time-of-flight mass spectrometry, 010401 analytical chemistry, Selected reaction monitoring, food and beverages, Arachis/chemistry, Allergens, Antigens, Plant, biology.organism_classification, 0104 chemical sciences, Triple quadrupole mass spectrometer, Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization, Food Analysis, Research Paper
Abstract

Peanut is a major cause of severe IgE-mediated food allergic reactions, which can be exacerbated by factors, such as exercise, that may increase allergen uptake into the circulation. Enzyme-linked immunosorbent assays (ELISAs) have been used to determine allergen uptake into serum, but there are concerns over their specificity and a confirmatory method is required. Mass spectrometry (MS) methods have the potential to provide rigorous alternatives for allergen determination. A suite of peptide targets representing the major clinically relevant peanut allergens previously applied in food analysis were used to develop a targeted multiple reaction monitoring (MRM) method for determination of peanut in serum. Depletion of serum using affinity chromatography was found to be essential to allow detection of the peptide targets. A comparison of triple quadrupole and Q-TOF methods showed that one Ara h 2 peptide was only detected by the Q-TOF, the other peptide targets giving similar assay sensitivities with both MS platforms, although transitions for all the peptides were detected more consistently with the Q-TOF. The Q-TOF MRM assay detected peanut from spiked serum more effectively than the triple quadrupole assay, with Ara h 3 being detected down to 3 mg total peanut protein/L of serum, comparable with an Ara h 3–specific ELISA. The poor recoveries observed for both methods are likely due to loss of peanut immune complexes during the serum depletion process. Nevertheless, the Q-TOF MRM method has much promise to confirm the uptake of peanut proteins in serum samples providing immune complexes can be disrupted effectively prior to depletion. Graphical abstract Electronic supplementary material The online version of this article (10.1007/s00216-020-02508-9) contains supplementary material, which is available to authorized users.

Published
2019
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