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2. Effect of bisphosphonates on viability, proliferation, and dexamethasone-induced apoptosis of articular chondrocytes. (Concise Report)

Author

Van Offel, JF, Schuerwegh, AJ, Bridts, CH, Stevens, WJ, and De Clerck, LS

Subjects
Osteoporosis -- Care and treatment, Bones -- Density, Diphosphonates -- Physiological aspects -- Measurement, Arthritics -- Care and treatment -- Physiological aspects -- Measurement, Health, Care and treatment, Physiological aspects, Measurement
Abstract

Background: Bisphosphonates (BP)increase bone mass in patients with rheumatoid arthritis and are effective in the prevention and treatment of steroid-induced osteoporosis. However, little is known about their direct effects on [...]

Published
2002

3. Abstracts from the Food Allergy and Anaphylaxis Meeting 2016

Author

Pouessel, G, Claverie, C, Labreuche, J, Renaudin, J-M, Dorkenoo, A, Eb, M, Moneret-Vautrin, A, Deschildre, A, Leteurtre, S, Grabenhenrich, L, Worm, M, Dölle, S, Scherer, K, Hutteger, I, Christensen, M, Bindslev-Jensen, C, Mortz, C, Eller, E, Kjaer, HF, Carneiro-Leão, L, Badas, J, Coimbra, A, Levy, DP, Ben-Shoshan, M, Rimon, A, Benor, S, Arends, NJT, Edelbroek, N, de Groot, H, Emons, JAM, Brand, HKA, Verhoeven, D, van Veen, LN, de Jong, NW, Noh, G, Jang, EH, Pascal, M, Dominguez, O, Piquer, M, Alvaro, M, Jimenez-Feijoo, R, Lozano, J, Machinena, A, del Mar Folqué, M, Giner, MT, Plaza, AM, Turner, P, Patel, N, Vazquez-Ortiz, M, Lindsley, S, Walker, L, Rosenberg, S, Mari, A, Alessandri, C, Giangrieco, I, Tuppo, L, Rafaiani, C, Mitterer, G, Ciancamerla, M, Ferrara, R, Bernardi, ML, Zennaro, D, Tamburrini, M, Ciardiello, MA, Harwanegg, C, Fernandez, A, Selb, R, Egenmann, P, Epstein, M, Hoffmann-Sommergruber, K, Koning, F, Lovik, M, Clare Mills, EN, Moreno, J, van Loveren, H, Wal, J-M, Diesner, S, Bergmayr, C, Pfitzner, B, Assmann, VE, Starkl, P, Endesfelder, D, Eiwegger, T, Szepfalusi, Z, Fehrenbach, H, Jensen-Jarolim, E, Hartmann, A, Pali-Schöll, I, Untersmayr, E, Wille, S, Meyer, P, Klingebiel, C, Lidholm, J, Ehrenberg, A, Östling, J, Cleach, I, Mège, J-L, Vitte, J, Aina, R, Dubiela, P, Pfeifer, S, Bublin, M, Radauer, C, Humeniuk, P, Kabasser, S, Asero, R, Bogas, G, Gomez, F, Campo, P, Salas, M, Doña, I, Barrionuevo, E, Guerrero, MA, Mayorga, C, Prieto, A, Barber, D, Torres, MJ, Jamin, A, Wangorsch, A, Ballmer, B, Vieths, S, Scheurer, S, Apostolovic, D, Mihailovic, J, Krstic, M, Starkhammar, M, Velickovic, TC, Hamsten, C, van Hage, M, van Erp, FC, Knol, EF, Kansen, HM, Pontoppidan, B, Meijer, Y, van der Ent, CK, Knulst, AC, Sayers, R, Brown, H, Custovic, A, Simpson, A, Mills, C, Schulz, J, Akkerdaas, J, Totis, M, Capt, A, Herouet-Guicheney, C, van Ree, R, Banerjee, T, Banerjee, A, Claude, M, Bouchaud, G, Lupi, R, Castan, L, Tranquet, O, Denery-Papini, S, Bodinier, M, Brossard, C, De Poi, R, Gritti, E, De Dominicis, E, Popping, B, de Laureto, PP, Palosuo, K, Kukkonen, AK, Pelkonen, A, Mäkelä, M, Lee, NA, Rost, J, Muralidharan, S, Campbell, D, Mehr, S, Nock, C, Baumert, J, Taylor, S, Mastrorilli, C, Tripodi, S, Caffarelli, C, Perna, S, Di Rienzo Businco, A, Sfika, I, Dondi, A, Bianchi, A, Dascola, CP, Ricci, G, Cipriani, F, Maiello, N, del Giudice, MM, Frediani, T, Frediani, S, Macrì, F, Pistoletti, C, Iacono, ID, Patria, MF, Varin, E, Peroni, D, Comberiati, P, Chini, L, Moschese, V, Lucarelli, S, Bernardini, R, Pingitore, G, Pelosi, U, Olcese, R, Moretti, M, Cirisano, A, Faggian, D, Travaglini, A, Plebani, M, Verga, MC, Calvani, M, Giordani, P, Matricardi, PM, Ontiveros, N, Cabrera-Chavez, F, Galand, J, Beaudouin, E, Pineau, F, Sakai, S, Matsunaga, K, Teshima, R, Larré, C, Denery, S, Tschirner, S, Trendelenburg, V, Schulz, G, Niggemann, B, Beyer, K, Bouferkas, Y, Belabbas, Y, Saidi, D, Kheroua, O, Mecherfi, KEE, Guendouz, M, Haddi, A, Kaddouri, H, Amaral, L, Pereira, A, Rodrigues, S, Datema, M, Jongejan, L, Clausen, M, Knulst, A, Papadopoulos, N, Kowalski, M, de Blay, F, Zwinderman, A, Hoffman-Sommergruber, K, Ballmer-Weber, B, Fernandez-Rivas, M, Deng, S, Yin, J, Eisenmann, C, Nassiri, M, Reinert, R, van der Valk, JPM, van Wijk, RG, Vergouwe, Y, Steyerberg, EW, Reitsma, M, Wichers, HJ, Savelkoul, HFJ, Vlieg-Boerstra, B, Dubois, AEJ, Carolino, F, Rodolfo, A, Cernadas, J, Roa-Medellín, D, Rodriguez-Fernandez, A, Navarro, J, Albendiz, V, Baeza, ML, Intente-Herrero, S, Mikkelsen, A, Mehlig, K, Lissner, L, Verrill, L, Luccioli, S, van Bilsen, J, Kuper, F, Wolterbeek, A, Rankouhi, TR, Verschuren, L, Cnossen, H, Jeurink, P, Garssen, J, Knippels, L, Garthoff, J, Houben, G, Leeman, W, Eleonore Pettersson, M, Schins, AMM, Koppelman, GH, Kollen, BJ, Zubchenko, S, Kuntz, S, Mérida, P, Álvaro, M, Riggioni, C, Castellanos, JH, Jimenez, R, Cap, M, Drumez, E, Lejeune, S, Thumerelle, C, Mordacq, C, Nève, V, Ricò, S, Varini, M, Nocerino, R, Cosenza, L, Amoroso, A, Di Costanzo, M, Di Scala, C, Bedogni, G, Canani, RB, Turner, PJ, Poza-Guedes, P, González-Pérez, R, Sánchez-Machín, I, Matheu-Delgado, V, Wambre, E, Ballegaard, A-S, Madsen, C, Gregersen, J, Bøgh, KL, Aubert, P, Neunlist, M, Magnan, A, Lozano-Ojalvo, D, Pablos-Tanarro, A, Pérez-Rodríguez, L, Molina, E, López-Fandiño, R, Rekima, A, Macchiaverni, P, Turfkruyer, M, Holvoet, S, Dupuis, L, Baiz, N, Annesi-Maesano, I, Mercenier, A, Nutten, S, Verhasselt, V, Mrakovcic-Sutic, I, Banac, S, Sutic, I, Baricev-Novakovic, Z, Pavisic, V, Muñoz-Cano, R, Jiménez-Rodríguez, T, Corbacho, D, Roca-Ferrer, J, Bartra, J, Bulog, A, Micovic, V, Markiewicz, L, Szymkiewicz, A, Szyc, A, Wróblewska, B, Harvey, BM, Harthoorn, LF, Wesley Burks, A, Rentzos, G, Björk, A-LB, Bengtsson, U, Barber, C, Kalicinsky, C, Breynaert, C, Coorevits, L, Jansen, C, Van Hoeyveld, E, Verbeke, K, Kochuyt, A-M, Schrijvers, R, Deleanu, D, Muntean, A, Konstantakopoulou, M, Pasioti, M, Papadopoulou, A, Iliopoulou, A, Mikos, N, Kompoti, E, de Castro, ED, Bartalomé, B, Ue, KL, Griffiths, E, Till, S, Grimshaw, K, Roberts, G, Selby, A, Butiene, I, Larco, JI, Dubakiene, R, Fiandor, A, Fiocchi, A, Sigurdardottir, S, Sprikkelman, A, Schoemaker, A-F, Xepapadaki, P, Keil, T, Cojocariu, Z, Barbado, BS, Iancu, V, Arroabarren, E, Esarte, MG, Arteaga, M, Andrade, MC, Borges, D, Kalil, J, Bianchi, PG, Agondi, RC, Gupta, RK, Sharma, A, Gupta, K, Das, M, Dwivedi, P, Karseladze, R, Jorjoliani, L, Saginadze, L, Tskhakaia, M, Basello, K, Piuri, G, Speciani, AF, Speciani, MC, Camerotto, C, Zinno, F, Pakholchuk, O, Nedelska, S, Pattini, S, Costantino, MT, Peveri, S, Villalta, D, Savi, E, Costanzi, A, Revyakina, VA, Kiseleva, MA, Kuvshinova, ED, Larkova, IA, Shekhetov, AA, Silva, D, Moreira, A, Plácido, J, van der Kleij, H, van Twuijver, E, Sutorius, R, de Kam, P-J, van Odijk, J, Lindqvist, H, Lustig, E, Jácome, AAA, Aguilar, KLB, Domínguez, MG, Hernández, DAM, Caruso, C, Casale, C, Rapaccini, GL, Romano, A, De Vitis, I, Cocco, RR, Aranda, C, Mallozi, MC, Motta, JF, Moraes, L, Pastorino, A, Rosario, N, Goudouris, E, Porto, A, Wandalsen, NF, Sarinho, E, Sano, F, Solé, D, Pitsios, C, Petrodimopoulou, M, Papadopoulou, E, Passioti, M, Kontogianni, M, Adamia, N, Khaleva, E, del Prado, AP, Du Toit, G, Krzych, E, Samolinska-Zawisza, U, Furmanczyk, K, Tomaszewska, A, Raciborski, F, Lipiec, A, Samel-Kowalik, P, Walkiewicz, A, Borowicz, J, Samolinski, B, Nano, AL, Recto, M, Somoza, ML, López, NB, Alzate, DP, Ruano, FJ, Garcimartín, MI, Haroun, E, de la Torre, MV, Rojas, A, Onieva, ML, Canto, G, Rodrigues, A, Forno, A, Cabral, AJ, Gonçalves, R, Vorozhko, I, Sentsova, T, Chernyak, O, Denisova, S, Ilènko, L, Muhortnich, V, Zimmermann, C, Rohrbach, A, Bakhsh, FR, Boudewijn, K, Oomkes-Pilon, A-M, Van Ginkle, D, Šilar, M, Jeverica, A, Vesel, T, Avčin, T, Korošec, P, van der Valk, J, Berends, I, Arends, N, van Maaren, M, Wichers, H, Emons, J, Dubois, A, de Jong, N, Matsyura, O, Besh, L, Huang, C-H, Jan, T-R, Stiefel, G, Tratt, J, Kirk, K, Arasi, S, Caminiti, L, Crisafulli, G, Fiamingo, C, Fresta, J, Pajno, G, Remington, B, Kruizinga, A, Marty Blom, W, Westerhout, J, Bijlsma, S, Blankestijn, M, Otten, H, Klemans, R, Michelsen-Huisman, AD, van Os-Medendorp, H, Kruizinga, AG, Versluis, A, van Duijn, G, de Zeeuw-Brouwer, HM-L, Castenmiller, JJM, Noteborn, HPJM, Houben, GF, Bravin, K, Luyt, D, Javed, B, Couch, P, Munro, C, Padfield, P, Sperrin, M, Byrne, A, Oosthuizen, L, Kelleher, C, Ward, F, Brosnan, N, King, G, Corbet, E, Guzmán, JAH, García, MB, Asensio, O, Navarrete, LV, Larramona, H, Miró, XD, Pyrz, K, Austin, M, Boloh, Y, Galloway, D, Hernandez, P, Hourihane, JOB, Kenna, F, Majkowska-Wojciechowska, B, Regent, L, Themisb, M, Schnadt, S, Semic-Jusufagic, A, Galvin, AD, Kauppila, T, Kuitunen, M, Kitsioulis, NA, Douladiris, N, Kostoudi, S, Manolaraki, I, Mitsias, D, Manousakis, E, Papadopoulos, NG, Knibb, R, Hammond, J, Cooke, R, Yrjänä, J, Hanni, A-M, Vähäsarja, P, Mustonen, O, Dunder, T, Kulmala, P, Lasa, E, D’Amelio, C, Martínez, S, Joral, A, Gastaminza, G, Goikoetxea, MJ, Candy, DCA, Van Ampting, MTJ, Oude Nijhuis, MM, Butt, AM, Peroni, DG, Fox, AT, Knol, J, Michaelis, LJ, Padua, I, Padrao, P, Moreira, P, Barros, R, Sharif, H, Ahmed, M, Gomaa, N, Mens, J, Smit, K, Timmermans, F, Poredoš, T, Jeverica, AK, Sedmak, M, Benedik, E, Accetto, M, Zupančič, M, Yonamine, G, Soldateli, G, Aquilante, B, Pastorino, AC, de Moraes Beck, CL, Gushken, AK, de Barros Dorna, M, dos Santos, CN, Castro, APM, Al-Qahtani, A, Arnaout, R, Khaliq, AR, Amin, R, Sheikh, F, Alvarez, J, Anda, M, Palacios, M, De Prada, M, Ponce, C, Balbino, B, Sibilano, R, Marichal, T, Gaudenzio, N, Karasuyama, H, Bruhns, P, Tsai, M, Reber, LL, Galli, SJ, Ferreira, AR, Cernadas, JR, del Campo García, A, Fernández, SP, Carrera, NS, Sánchez-Cruz, FB, Lorenzo, JRF, Claus, S, Pföhler, C, Ruëff, F, Treudler, R, Jaume, ME, Madroñero, A, Perez, MTG, Julia, JC, Plovdiv, CH, Gethings, L, Langridge, J, Adel-Patient, K, Bernard, H, Barcievic-Jones, I, Sokolova, R, Yankova, R, Ivanovska, M, Murdjeva, M, Popova, T, Dermendzhiev, S, Karjalainen, M, Lehnigk, U, Brown, D, Locklear, JC, Locklear, J, Maris, I, Hourihane, J, Ornelas, C, Caiado, J, Ferreira, MB, Pereira-Barbosa, M, Puente, Y, Daza, JC, Monteseirin, FJ, Ukleja-Sokolowska, N, Gawronska-Ukleja, E, Zbikowska-Gotz, M, Bartuzi, Z, Sokolowski, L, Adams, A, Mahon, B, English, K, Gourdon-Dubois, N, Sellam, L, Pereira, B, Michaud, E, Messaoudi, K, Evrard, B, Fauquert, J-L, Palomares, F, Gomez, G, Rodriguez, MJ, Galindo, L, Molina, A, Paparo, L, Mennini, M, Aitoro, R, Wawrzeńczyk, A, Przybyszewski, M, Sarıcoban, HE, Ugras, M, Yalvac, Z, Flokstra-de Blok, BMJ, van der Velde, JL, Vereda, A, Ippolito, C, Traversa, A, Adriano, D, Bianchi, DM, Gallina, S, Decastelli, L, Makatsori, M, Miles, A, Devetak, SP, Devetak, I, Tabet, SA, Trandbohus, JF, Winther, P, Malling, H-J, Hansen, KS, Garvey, LH, Wang, C-C, Cheng, Y-H, Tung, C-W, Dietrich, M, Marenholz, I, Kalb, B, Grosche, S, Blümchen, K, Schlags, R, Price, M, Rietz, S, Esparza-Gordillo, J, Lau, S, Lee, Y-A, Almontasheri, A, Bahkali, MA, Elshorbagi, S, Alfhaid, A, Altamimi, M, Madbouly, E, Al-Dhekri, H, Arnaout, RK, Basagaña, M, Miquel, S, Bartolomé, B, Brix, B, Rohwer, S, Brandhoff, S, Berger, A, Suer, W, Weimann, A, Bueno, C, Martín-Pedraza, L, Abián, S, Segundo-Acosta, PS, López-Rodríguez, JC, Barderas, R, Batanero, E, Cuesta-Herranz, J, Villalba, MT, Correia, M, Benito-Garcia, F, Arêde, C, Piedade, S, Morais-Almeida, M, Hindley, J, Yarham, R, Kuklinska-Pijanka, A, Gillick, D, Patient, K, Chapman, MD, Miranda, A, Matos, E, Sokolova, A, Rao, H, Baricevic-Jones, I, Smith, F, Xue, W, Magnusdottir, H, Vidarsdottir, AG, Lund, S, Jensen, AB, Ludviksson, BR, Simon, R, Elfont, R, Bennett, S, Voyksner, R, de Lurdes Torre, M, Yürek, S, Faber, MA, Bastiaensen, A, Mangodt, E, van Gasse, A, Decuyper, I, Sabato, V, Hagendorens, MM, Bridts, CH, De Clerck, LS, Ebo, D, Schwarz, S, Ziegert, M, Albroscheit, S, Schwager, C, Kull, S, Behrends, J, Röckendorf, N, Schocker, F, Frey, A, Homann, A, Becker, W-M, Jappe, U, Zaabat, N, Osscini, S, Agabriel, C, Sterling, B, Carsin, A, Liabeuf, V, Maćków, M, Zbróg, A, Bronkowska, M, Courtois, J, Gadisseur, R, Bertholet, C, Lukas, P, Cavalier, E, Delahaut, P, Quinting, B, Gertmo, MB, Hasseus, ET, Barzylovych, V, Oliveira, J, Ensina, LF, Aranda, CS, Dopazo, L, Lopez, R, Perez, R, Santos-Diez, L, Bilbao, A, Garcia, JM, Núñez, IG, Mármol, MÁA, Villarejo, MJB, Martos, JAB, Vergara, MS, García, JMI, Michalska, A, Sergiejko, G, Zacniewski, R, Ghiordanescu, I-M, Deaconu, C, Popescu, M, Bumbacea, RS, Ibranji, A, Nikolla, E, Loloci, G, Juel-Berg, N, Larsen, LF, Poulsen, LK, Marcelino, J, Prata, R, Costa, AC, Duarte, F, Neto, M, Santos, J, Pestana, LC, Sampaio, D, Minale, P, Dignetti, P, Bignardi, D, Nedelea, I, Popescu, F-D, Vieru, M, Secureanu, F-A, Ganea, CS, Vieira, M, Silva, JPM, Watts, T, Watts, S, Lomikovska, M, Peredelskaya, M, Nenasheva, N, Filipovic, I, Zivkovic, Z, Filipovic, D, Higgs, J, Warner, A, Jones, C, Pouessel, G, Claverie, C, Labreuche, J, Renaudin, J-M, Dorkenoo, A, Eb, M, Moneret-Vautrin, A, Deschildre, A, Leteurtre, S, Grabenhenrich, L, Worm, M, Dölle, S, Scherer, K, Hutteger, I, Christensen, M, Bindslev-Jensen, C, Mortz, C, Eller, E, Kjaer, HF, Carneiro-Leão, L, Badas, J, Coimbra, A, Levy, DP, Ben-Shoshan, M, Rimon, A, Benor, S, Arends, NJT, Edelbroek, N, de Groot, H, Emons, JAM, Brand, HKA, Verhoeven, D, van Veen, LN, de Jong, NW, Noh, G, Jang, EH, Pascal, M, Dominguez, O, Piquer, M, Alvaro, M, Jimenez-Feijoo, R, Lozano, J, Machinena, A, del Mar Folqué, M, Giner, MT, Plaza, AM, Turner, P, Patel, N, Vazquez-Ortiz, M, Lindsley, S, Walker, L, Rosenberg, S, Mari, A, Alessandri, C, Giangrieco, I, Tuppo, L, Rafaiani, C, Mitterer, G, Ciancamerla, M, Ferrara, R, Bernardi, ML, Zennaro, D, Tamburrini, M, Ciardiello, MA, Harwanegg, C, Fernandez, A, Selb, R, Egenmann, P, Epstein, M, Hoffmann-Sommergruber, K, Koning, F, Lovik, M, Clare Mills, EN, Moreno, J, van Loveren, H, Wal, J-M, Diesner, S, Bergmayr, C, Pfitzner, B, Assmann, VE, Starkl, P, Endesfelder, D, Eiwegger, T, Szepfalusi, Z, Fehrenbach, H, Jensen-Jarolim, E, Hartmann, A, Pali-Schöll, I, Untersmayr, E, Wille, S, Meyer, P, Klingebiel, C, Lidholm, J, Ehrenberg, A, Östling, J, Cleach, I, Mège, J-L, Vitte, J, Aina, R, Dubiela, P, Pfeifer, S, Bublin, M, Radauer, C, Humeniuk, P, Kabasser, S, Asero, R, Bogas, G, Gomez, F, Campo, P, Salas, M, Doña, I, Barrionuevo, E, Guerrero, MA, Mayorga, C, Prieto, A, Barber, D, Torres, MJ, Jamin, A, Wangorsch, A, Ballmer, B, Vieths, S, Scheurer, S, Apostolovic, D, Mihailovic, J, Krstic, M, Starkhammar, M, Velickovic, TC, Hamsten, C, van Hage, M, van Erp, FC, Knol, EF, Kansen, HM, Pontoppidan, B, Meijer, Y, van der Ent, CK, Knulst, AC, Sayers, R, Brown, H, Custovic, A, Simpson, A, Mills, C, Schulz, J, Akkerdaas, J, Totis, M, Capt, A, Herouet-Guicheney, C, van Ree, R, Banerjee, T, Banerjee, A, Claude, M, Bouchaud, G, Lupi, R, Castan, L, Tranquet, O, Denery-Papini, S, Bodinier, M, Brossard, C, De Poi, R, Gritti, E, De Dominicis, E, Popping, B, de Laureto, PP, Palosuo, K, Kukkonen, AK, Pelkonen, A, Mäkelä, M, Lee, NA, Rost, J, Muralidharan, S, Campbell, D, Mehr, S, Nock, C, Baumert, J, Taylor, S, Mastrorilli, C, Tripodi, S, Caffarelli, C, Perna, S, Di Rienzo Businco, A, Sfika, I, Dondi, A, Bianchi, A, Dascola, CP, Ricci, G, Cipriani, F, Maiello, N, del Giudice, MM, Frediani, T, Frediani, S, Macrì, F, Pistoletti, C, Iacono, ID, Patria, MF, Varin, E, Peroni, D, Comberiati, P, Chini, L, Moschese, V, Lucarelli, S, Bernardini, R, Pingitore, G, Pelosi, U, Olcese, R, Moretti, M, Cirisano, A, Faggian, D, Travaglini, A, Plebani, M, Verga, MC, Calvani, M, Giordani, P, Matricardi, PM, Ontiveros, N, Cabrera-Chavez, F, Galand, J, Beaudouin, E, Pineau, F, Sakai, S, Matsunaga, K, Teshima, R, Larré, C, Denery, S, Tschirner, S, Trendelenburg, V, Schulz, G, Niggemann, B, Beyer, K, Bouferkas, Y, Belabbas, Y, Saidi, D, Kheroua, O, Mecherfi, KEE, Guendouz, M, Haddi, A, Kaddouri, H, Amaral, L, Pereira, A, Rodrigues, S, Datema, M, Jongejan, L, Clausen, M, Knulst, A, Papadopoulos, N, Kowalski, M, de Blay, F, Zwinderman, A, Hoffman-Sommergruber, K, Ballmer-Weber, B, Fernandez-Rivas, M, Deng, S, Yin, J, Eisenmann, C, Nassiri, M, Reinert, R, van der Valk, JPM, van Wijk, RG, Vergouwe, Y, Steyerberg, EW, Reitsma, M, Wichers, HJ, Savelkoul, HFJ, Vlieg-Boerstra, B, Dubois, AEJ, Carolino, F, Rodolfo, A, Cernadas, J, Roa-Medellín, D, Rodriguez-Fernandez, A, Navarro, J, Albendiz, V, Baeza, ML, Intente-Herrero, S, Mikkelsen, A, Mehlig, K, Lissner, L, Verrill, L, Luccioli, S, van Bilsen, J, Kuper, F, Wolterbeek, A, Rankouhi, TR, Verschuren, L, Cnossen, H, Jeurink, P, Garssen, J, Knippels, L, Garthoff, J, Houben, G, Leeman, W, Eleonore Pettersson, M, Schins, AMM, Koppelman, GH, Kollen, BJ, Zubchenko, S, Kuntz, S, Mérida, P, Álvaro, M, Riggioni, C, Castellanos, JH, Jimenez, R, Cap, M, Drumez, E, Lejeune, S, Thumerelle, C, Mordacq, C, Nève, V, Ricò, S, Varini, M, Nocerino, R, Cosenza, L, Amoroso, A, Di Costanzo, M, Di Scala, C, Bedogni, G, Canani, RB, Turner, PJ, Poza-Guedes, P, González-Pérez, R, Sánchez-Machín, I, Matheu-Delgado, V, Wambre, E, Ballegaard, A-S, Madsen, C, Gregersen, J, Bøgh, KL, Aubert, P, Neunlist, M, Magnan, A, Lozano-Ojalvo, D, Pablos-Tanarro, A, Pérez-Rodríguez, L, Molina, E, López-Fandiño, R, Rekima, A, Macchiaverni, P, Turfkruyer, M, Holvoet, S, Dupuis, L, Baiz, N, Annesi-Maesano, I, Mercenier, A, Nutten, S, Verhasselt, V, Mrakovcic-Sutic, I, Banac, S, Sutic, I, Baricev-Novakovic, Z, Pavisic, V, Muñoz-Cano, R, Jiménez-Rodríguez, T, Corbacho, D, Roca-Ferrer, J, Bartra, J, Bulog, A, Micovic, V, Markiewicz, L, Szymkiewicz, A, Szyc, A, Wróblewska, B, Harvey, BM, Harthoorn, LF, Wesley Burks, A, Rentzos, G, Björk, A-LB, Bengtsson, U, Barber, C, Kalicinsky, C, Breynaert, C, Coorevits, L, Jansen, C, Van Hoeyveld, E, Verbeke, K, Kochuyt, A-M, Schrijvers, R, Deleanu, D, Muntean, A, Konstantakopoulou, M, Pasioti, M, Papadopoulou, A, Iliopoulou, A, Mikos, N, Kompoti, E, de Castro, ED, Bartalomé, B, Ue, KL, Griffiths, E, Till, S, Grimshaw, K, Roberts, G, Selby, A, Butiene, I, Larco, JI, Dubakiene, R, Fiandor, A, Fiocchi, A, Sigurdardottir, S, Sprikkelman, A, Schoemaker, A-F, Xepapadaki, P, Keil, T, Cojocariu, Z, Barbado, BS, Iancu, V, Arroabarren, E, Esarte, MG, Arteaga, M, Andrade, MC, Borges, D, Kalil, J, Bianchi, PG, Agondi, RC, Gupta, RK, Sharma, A, Gupta, K, Das, M, Dwivedi, P, Karseladze, R, Jorjoliani, L, Saginadze, L, Tskhakaia, M, Basello, K, Piuri, G, Speciani, AF, Speciani, MC, Camerotto, C, Zinno, F, Pakholchuk, O, Nedelska, S, Pattini, S, Costantino, MT, Peveri, S, Villalta, D, Savi, E, Costanzi, A, Revyakina, VA, Kiseleva, MA, Kuvshinova, ED, Larkova, IA, Shekhetov, AA, Silva, D, Moreira, A, Plácido, J, van der Kleij, H, van Twuijver, E, Sutorius, R, de Kam, P-J, van Odijk, J, Lindqvist, H, Lustig, E, Jácome, AAA, Aguilar, KLB, Domínguez, MG, Hernández, DAM, Caruso, C, Casale, C, Rapaccini, GL, Romano, A, De Vitis, I, Cocco, RR, Aranda, C, Mallozi, MC, Motta, JF, Moraes, L, Pastorino, A, Rosario, N, Goudouris, E, Porto, A, Wandalsen, NF, Sarinho, E, Sano, F, Solé, D, Pitsios, C, Petrodimopoulou, M, Papadopoulou, E, Passioti, M, Kontogianni, M, Adamia, N, Khaleva, E, del Prado, AP, Du Toit, G, Krzych, E, Samolinska-Zawisza, U, Furmanczyk, K, Tomaszewska, A, Raciborski, F, Lipiec, A, Samel-Kowalik, P, Walkiewicz, A, Borowicz, J, Samolinski, B, Nano, AL, Recto, M, Somoza, ML, López, NB, Alzate, DP, Ruano, FJ, Garcimartín, MI, Haroun, E, de la Torre, MV, Rojas, A, Onieva, ML, Canto, G, Rodrigues, A, Forno, A, Cabral, AJ, Gonçalves, R, Vorozhko, I, Sentsova, T, Chernyak, O, Denisova, S, Ilènko, L, Muhortnich, V, Zimmermann, C, Rohrbach, A, Bakhsh, FR, Boudewijn, K, Oomkes-Pilon, A-M, Van Ginkle, D, Šilar, M, Jeverica, A, Vesel, T, Avčin, T, Korošec, P, van der Valk, J, Berends, I, Arends, N, van Maaren, M, Wichers, H, Emons, J, Dubois, A, de Jong, N, Matsyura, O, Besh, L, Huang, C-H, Jan, T-R, Stiefel, G, Tratt, J, Kirk, K, Arasi, S, Caminiti, L, Crisafulli, G, Fiamingo, C, Fresta, J, Pajno, G, Remington, B, Kruizinga, A, Marty Blom, W, Westerhout, J, Bijlsma, S, Blankestijn, M, Otten, H, Klemans, R, Michelsen-Huisman, AD, van Os-Medendorp, H, Kruizinga, AG, Versluis, A, van Duijn, G, de Zeeuw-Brouwer, HM-L, Castenmiller, JJM, Noteborn, HPJM, Houben, GF, Bravin, K, Luyt, D, Javed, B, Couch, P, Munro, C, Padfield, P, Sperrin, M, Byrne, A, Oosthuizen, L, Kelleher, C, Ward, F, Brosnan, N, King, G, Corbet, E, Guzmán, JAH, García, MB, Asensio, O, Navarrete, LV, Larramona, H, Miró, XD, Pyrz, K, Austin, M, Boloh, Y, Galloway, D, Hernandez, P, Hourihane, JOB, Kenna, F, Majkowska-Wojciechowska, B, Regent, L, Themisb, M, Schnadt, S, Semic-Jusufagic, A, Galvin, AD, Kauppila, T, Kuitunen, M, Kitsioulis, NA, Douladiris, N, Kostoudi, S, Manolaraki, I, Mitsias, D, Manousakis, E, Papadopoulos, NG, Knibb, R, Hammond, J, Cooke, R, Yrjänä, J, Hanni, A-M, Vähäsarja, P, Mustonen, O, Dunder, T, Kulmala, P, Lasa, E, D’Amelio, C, Martínez, S, Joral, A, Gastaminza, G, Goikoetxea, MJ, Candy, DCA, Van Ampting, MTJ, Oude Nijhuis, MM, Butt, AM, Peroni, DG, Fox, AT, Knol, J, Michaelis, LJ, Padua, I, Padrao, P, Moreira, P, Barros, R, Sharif, H, Ahmed, M, Gomaa, N, Mens, J, Smit, K, Timmermans, F, Poredoš, T, Jeverica, AK, Sedmak, M, Benedik, E, Accetto, M, Zupančič, M, Yonamine, G, Soldateli, G, Aquilante, B, Pastorino, AC, de Moraes Beck, CL, Gushken, AK, de Barros Dorna, M, dos Santos, CN, Castro, APM, Al-Qahtani, A, Arnaout, R, Khaliq, AR, Amin, R, Sheikh, F, Alvarez, J, Anda, M, Palacios, M, De Prada, M, Ponce, C, Balbino, B, Sibilano, R, Marichal, T, Gaudenzio, N, Karasuyama, H, Bruhns, P, Tsai, M, Reber, LL, Galli, SJ, Ferreira, AR, Cernadas, JR, del Campo García, A, Fernández, SP, Carrera, NS, Sánchez-Cruz, FB, Lorenzo, JRF, Claus, S, Pföhler, C, Ruëff, F, Treudler, R, Jaume, ME, Madroñero, A, Perez, MTG, Julia, JC, Plovdiv, CH, Gethings, L, Langridge, J, Adel-Patient, K, Bernard, H, Barcievic-Jones, I, Sokolova, R, Yankova, R, Ivanovska, M, Murdjeva, M, Popova, T, Dermendzhiev, S, Karjalainen, M, Lehnigk, U, Brown, D, Locklear, JC, Locklear, J, Maris, I, Hourihane, J, Ornelas, C, Caiado, J, Ferreira, MB, Pereira-Barbosa, M, Puente, Y, Daza, JC, Monteseirin, FJ, Ukleja-Sokolowska, N, Gawronska-Ukleja, E, Zbikowska-Gotz, M, Bartuzi, Z, Sokolowski, L, Adams, A, Mahon, B, English, K, Gourdon-Dubois, N, Sellam, L, Pereira, B, Michaud, E, Messaoudi, K, Evrard, B, Fauquert, J-L, Palomares, F, Gomez, G, Rodriguez, MJ, Galindo, L, Molina, A, Paparo, L, Mennini, M, Aitoro, R, Wawrzeńczyk, A, Przybyszewski, M, Sarıcoban, HE, Ugras, M, Yalvac, Z, Flokstra-de Blok, BMJ, van der Velde, JL, Vereda, A, Ippolito, C, Traversa, A, Adriano, D, Bianchi, DM, Gallina, S, Decastelli, L, Makatsori, M, Miles, A, Devetak, SP, Devetak, I, Tabet, SA, Trandbohus, JF, Winther, P, Malling, H-J, Hansen, KS, Garvey, LH, Wang, C-C, Cheng, Y-H, Tung, C-W, Dietrich, M, Marenholz, I, Kalb, B, Grosche, S, Blümchen, K, Schlags, R, Price, M, Rietz, S, Esparza-Gordillo, J, Lau, S, Lee, Y-A, Almontasheri, A, Bahkali, MA, Elshorbagi, S, Alfhaid, A, Altamimi, M, Madbouly, E, Al-Dhekri, H, Arnaout, RK, Basagaña, M, Miquel, S, Bartolomé, B, Brix, B, Rohwer, S, Brandhoff, S, Berger, A, Suer, W, Weimann, A, Bueno, C, Martín-Pedraza, L, Abián, S, Segundo-Acosta, PS, López-Rodríguez, JC, Barderas, R, Batanero, E, Cuesta-Herranz, J, Villalba, MT, Correia, M, Benito-Garcia, F, Arêde, C, Piedade, S, Morais-Almeida, M, Hindley, J, Yarham, R, Kuklinska-Pijanka, A, Gillick, D, Patient, K, Chapman, MD, Miranda, A, Matos, E, Sokolova, A, Rao, H, Baricevic-Jones, I, Smith, F, Xue, W, Magnusdottir, H, Vidarsdottir, AG, Lund, S, Jensen, AB, Ludviksson, BR, Simon, R, Elfont, R, Bennett, S, Voyksner, R, de Lurdes Torre, M, Yürek, S, Faber, MA, Bastiaensen, A, Mangodt, E, van Gasse, A, Decuyper, I, Sabato, V, Hagendorens, MM, Bridts, CH, De Clerck, LS, Ebo, D, Schwarz, S, Ziegert, M, Albroscheit, S, Schwager, C, Kull, S, Behrends, J, Röckendorf, N, Schocker, F, Frey, A, Homann, A, Becker, W-M, Jappe, U, Zaabat, N, Osscini, S, Agabriel, C, Sterling, B, Carsin, A, Liabeuf, V, Maćków, M, Zbróg, A, Bronkowska, M, Courtois, J, Gadisseur, R, Bertholet, C, Lukas, P, Cavalier, E, Delahaut, P, Quinting, B, Gertmo, MB, Hasseus, ET, Barzylovych, V, Oliveira, J, Ensina, LF, Aranda, CS, Dopazo, L, Lopez, R, Perez, R, Santos-Diez, L, Bilbao, A, Garcia, JM, Núñez, IG, Mármol, MÁA, Villarejo, MJB, Martos, JAB, Vergara, MS, García, JMI, Michalska, A, Sergiejko, G, Zacniewski, R, Ghiordanescu, I-M, Deaconu, C, Popescu, M, Bumbacea, RS, Ibranji, A, Nikolla, E, Loloci, G, Juel-Berg, N, Larsen, LF, Poulsen, LK, Marcelino, J, Prata, R, Costa, AC, Duarte, F, Neto, M, Santos, J, Pestana, LC, Sampaio, D, Minale, P, Dignetti, P, Bignardi, D, Nedelea, I, Popescu, F-D, Vieru, M, Secureanu, F-A, Ganea, CS, Vieira, M, Silva, JPM, Watts, T, Watts, S, Lomikovska, M, Peredelskaya, M, Nenasheva, N, Filipovic, I, Zivkovic, Z, Filipovic, D, Higgs, J, Warner, A, and Jones, C

Published
2017

8. Pre- and post- natal exposure to antibiotics and the development of eczema, recurrent wheezing and atopic sensitization in children up to the age of 4 years

Author

Dom, S, Droste, JHJ, Sariachvili, MA, Hagendorens, MM, Oostveen, E, Bridts, CH, Stevens, WJ, Wieringa, Marjan, Weyler, JJ, and Otorhinolaryngology and Head and Neck Surgery

Abstract

Background Little data are available on the relationship between indirect antibiotic exposure of the child in utero or during lactation and allergic diseases. On the other hand, several studies have been conducted on the association with direct post-natal antibiotic exposure, but the results are conflicting. Objective The aim of this study was to investigate pre-and post-natal antibiotic exposure and the subsequent development of eczema, recurrent wheeze and atopic sensitization in children up to the age of 4 years. Methods We conducted an aetiologic study in 773 children based on a prospective birth cohort project in which environmental and health information were collected using questionnaires. Antibiotic exposure was assessed as maternal antibiotic intake during pregnancy and during lactation and as medication intake of the child. The chronology of exposures and outcomes was taken into account during the data processing. At the age of 1 and 4 years, a blood sample was taken for the quantification of specific IgE. Results Prenatal antibiotic exposure was significantly positively associated with eczema, whereas no association was found with recurrent wheeze and atopic sensitization. We found a positive, although statistically not significant, association between antibiotic exposure through breastfeeding and recurrent wheeze. Neither eczema nor atopic sensitization was significantly associated with antibiotic exposure through breastfeeding. Finally, we observed a negative association between the use of antibiotics in the first year of life and eczema and atopic sensitization, and also between antibiotic use after the first year of life and recurrent wheeze, eczema and atopic sensitization. Conclusion Indirect exposure to antibiotics (in utero and during lactation) increases the risk for allergic symptoms in children, while direct exposure to antibiotics appears to be protective. The biological mechanisms underlying these findings still need to be elucidated.

Published
2010

12. Human basophils: a unique biological instrument to detect the allergenicity of food.

Author

Sabato, V, Van Hengel, Aj, De Knop, Kj, Verweij, Mm, Hagendorens, Mm, Bridts, Ch, De Clerck, L, Schiavino, Domenico, Stevens, Wj, Ebo, Dg, De Clerck, Ls, Schiavino, Domenico (ORCID:0000-0003-3824-0619), Sabato, V, Van Hengel, Aj, De Knop, Kj, Verweij, Mm, Hagendorens, Mm, Bridts, Ch, De Clerck, L, Schiavino, Domenico, Stevens, Wj, Ebo, Dg, De Clerck, Ls, and Schiavino, Domenico (ORCID:0000-0003-3824-0619)

Abstract

Human basophils: a unique biological instrument to detect the allergenicity of food.

Published
2011

14. Phenotypic and functional characterization of in vitrocultured human mast cells

Author

Cop, N, Decuyper, II, Faber, MA, Sabato, V, Bridts, CH, Hagendorens, MM, De Winter, BY, De Clerck, LS, and Ebo, DG

Abstract

Mast cell progenitor cells, derived from CD34+hematopoietic stem cells, enter the circulation and subsequently mucosal or connective tissues where they mature to mast cells. Upon activation, mast cells increase the expression of activation markers, e.g. CD63, and release histamine amongst other mediators. Traditionally, release of these mediators is quantified using assays measuring their extracellular concentration in the supernatant of stimulated cells. Human mast cells (HuMC) were cultured from peripheral blood, phenotypically characterized, passively sensitized with allogenic IgE antibodies and finally stimulated by anti‐IgE that crosslinks IgE/FcεRI complexes. Alterations in the number of cells positive for CD63 and release of histamine were quantified simultaneously by flow cytometry. In culture, two distinct CD45+cell populations were identified: CD117+CD203c+hiand CD117‐CD203c+lowcells. Both populations showed positivity for FcεRI, tryptase and chymase, and contained histamine. Activation resulted in a significant increase of cells positive for CD63+up to 21% (range: 11–39) for CD117+CD203c+hicells (P= 0.005), and 27% (18–55) CD63+for CD117‐CD203c+lowcells (P= 0.02). Baseline histamine content was higher for CD117+CD203c+hicells than for CD117‐CD203c+lowcells, respectively 994 (695–6815) Molecules of Equivalent Specific Fluorochrome V500 per cell (MESF‐V500/cell) and 797 (629–4978) MESF‐V500/cell (P= 0.02). After activation, CD117+CD203c+hicells showed significant histamine release of 578 (366–1521) MESF‐V500/cell, whilst CD117‐CD203c+lowcells resulted in 310 (217–366) MESF‐V500/cell histamine release. This study discloses that culturing HuMC from CD34+progenitors yields 2 phenotypically distinct cell populations that display a greatly similar response upon cross‐linking of IgE/FcεRI complexes. © 2016 International Clinical Cytometry Society

Published
2017
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21. Experimental Arthritis in Rats Induced By Intraarticular Injection of Ige Aggregates - Evidence for Arthritogenic Role of Complexed Ige

Author

UCL, Declerck, LS., Struyf, NJ., Bridts, CH., Vanmarck, EA., Breedveld, FC., Devries, E., Bazin, Hervé, Stevens, WJ., UCL, Declerck, LS., Struyf, NJ., Bridts, CH., Vanmarck, EA., Breedveld, FC., Devries, E., Bazin, Hervé, and Stevens, WJ.

Abstract

An experimental arthritis model in the rat was used to study the arthritogenic potential of complexed IgE. IgE aggregates were produced in vitro by cross linking monoclonal rat IgE by dimethyl suberimidate and were injected into the knee joints. Animals which had not been injected and animals injected with phosphate buffered saline served as controls. The concentration of histamine in tissues, diffusion into the joint of bovine serum albumin labelled with iodine-125 injected intravenously, and the histology of the joints were studied. There was a significant decrease in the concentration of histamine in synovial tissue 8 and 24 hours after the injection of the IgE aggregates. A decreased number of stainable mast cells were found 8, 24, and 48 hours after exposure. A moderate hyperplasia of the synovial lining layer was also noted. These results provide further evidence for the arthritogenic potential of complexed IgE, especially in the initiation of arthritis through activation of mast cells.

Published
1992

31. Mas-related G protein-coupled receptor MRGPRX2 in human basophils: Expression and functional studies.

Author

Toscano A, Elst J, Van Gasse AL, Beyens M, van der Poorten ML, Bridts CH, Mertens C, Van Houdt M, Hagendorens MM, Van Remoortel S, Timmermans JP, Ebo DG, and Sabato V

Subjects
Humans, Basophils, Immunoglobulin E, Moxifloxacin, Allergens metabolism, Receptors, G-Protein-Coupled metabolism, Nerve Tissue Proteins metabolism, Receptors, Neuropeptide genetics, Receptors, Neuropeptide metabolism, Hypersensitivity, Immediate metabolism, Drug Hypersensitivity metabolism
Abstract

Background: Occupancy of MRGPRX2 heralds a new era in our understandings of immediate drug hypersensitivity reactions (IDHRs), but a constitutive expression of this receptor by basophils is debated., Objective: To explore the expression and functionality of MRGPRX2 in and on basophils., Methods: Basophils from patients with birch pollen allergy, IDHRs to moxifloxacin, and healthy controls were studied in different conditions, that is, in rest, after stimulation with anti-IgE, recombinant major birch pollen allergen (rBet v 1), moxifloxacin, fMLP, substance P (SP), or other potential basophil secretagogues. In a separate set of experiments, basophils were studied after purification and resuspension in different media., Results: Resting whole blood basophils barely express MRGPRX2 on their surface and are unresponsive to SP or moxifloxacin. However, surface MRGPRX2 is quickly upregulated upon incubation with anti-IgE or fMLP. Pre-stimulation with anti-IgE can induce a synergic effect on basophil degranulation in IgE-responsive subjects after incubation with SP or moxifloxacin, provided that basophils have been obtained from patients who experienced an IDHR to moxifloxacin. Cell purification can trigger a "spontaneous" and functional upregulation of MRGPRX2 on basophils, not seen in whole blood cells, and its surface density can be influenced by distinct culture media., Conclusion: Basophils barely express MRGPRX2 in resting conditions. However, the receptor can be quickly upregulated after stimulation with anti-IgE, fMLP, or after purification, making cells responsive to MRGPRX2 occupation. We anticipate that such "conditioned" basophils constitute a model to explore MRGPRX2 agonism or antagonism, including IDHRs originating from the occupation of this receptor., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2023 Toscano, Elst, Van Gasse, Beyens, van der Poorten, Bridts, Mertens, Van Houdt, Hagendorens, Van Remoortel, Timmermans, Ebo and Sabato.)

Published
2023
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32. Mast cell activation test: A new asset in the investigation of the chlorhexidine cross-sensitization profile.

Author

Ebo DG, Elst J, Moonen N, van der Poorten MM, Van Gasse AL, Garvey LH, Bridts CH, Mertens C, Hagendorens MM, and Sabato V

Subjects
Humans, Mast Cells, Biguanides pharmacology, Cell Degranulation, Immunoglobulin E, Receptors, G-Protein-Coupled, Nerve Tissue Proteins, Receptors, Neuropeptide, Chlorhexidine pharmacology, Hypersensitivity
Abstract

Background: Insights into the IgE cross-sensitization and possible cross-reactivity patterns of sera reactive to chlorhexidine (CHX) are still incomplete and are likely to benefit from a functional exploration using a passive mast cell activation test (pMAT). Therefore, we want to study whether the pMAT with CHX-specific IgE (sIgE) enables to depict effector cell degranulation in response to alexidine (ALX), octenidine (OCT) and/or polyhexamethylene biguanide (PHMB) indicative of cross-reactivity between these compounds and CHX., Methods: Serum of 10 CHX-allergic patients, nine individuals with an isolated sIgE CHX and five healthy controls were included. Human cultured mast cells (MCs) were, before and after sensitization, challenged with CHX, ALX, OCT or PHMB. Degranulation was measured via quantification of upregulation of CD63., Results: Mast cell responsiveness to ALX and OCT was demonstrable with 4/10 and 3/10 of the sera of CHX-allergic patients respectively. Percentage of degranulation varied between 12 and 34% for ALX-reactive MCs and between 4 and 22% for OCT-reactive MCs. No reactivity to ALX or OCT was demonstrable when using sera obtained from individuals with an isolated sIgE CHX or from healthy controls. Unlike CHX, ALX and OCT, PHMB turned out to be a direct MC activator via occupation of MRGPRX2. PHMB-reactive sIgEs were demonstrable in some patients with an isolated sIgE CHX but were unable to trigger PHMB-induced degranulation in MRGPRX2 knockdown MCs., Conclusion: Mast cells constitute an attractive tool to explore cross-reactivity between structurally similar compounds. Along with the identification of safe alternatives for the individual patient, the pMAT can advance our insights into sIgE cross-reactivity patterns including assessment of molecules not yet approved for human use., (© 2022 John Wiley & Sons Ltd.)

Published
2022
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33. Overexpression of FcεRI on Bone Marrow Mast Cells, but Not MRGPRX2, in Clonal Mast Cell Disorders With Wasp Venom Anaphylaxis.

Author

Elst J, De Puysseleyr LP, Ebo DG, Faber MA, Van Gasse AL, van der Poorten MM, Decuyper II, Bridts CH, Mertens C, Van Houdt M, Hagendorens MM, De Clerck LS, Verlinden A, Vermeulen K, Maes MB, Berneman ZN, Valent P, and Sabato V

Subjects
Bone Marrow, Humans, Immunoglobulin E metabolism, Mast Cells metabolism, Nerve Tissue Proteins metabolism, Receptors, G-Protein-Coupled metabolism, Receptors, IgE metabolism, Receptors, Neuropeptide metabolism, Tryptases metabolism, Wasp Venoms metabolism, Anaphylaxis metabolism, Mastocytosis metabolism
Abstract

Background: Uncertainties remain about the molecular mechanisms governing clonal mast cell disorders (CMCD) and anaphylaxis., Objective: This study aims at comparing the burden, phenotype and behavior of mast cells (MCs) and basophils in patients with CMCD with wasp venom anaphylaxis (CMCD/WVA + ), CMCD patients without anaphylaxis (CMCD/ANA - ), patients with an elevated baseline serum tryptase (EBST), patients with wasp venom anaphylaxis without CMCD (WVA + ) and patients with a non-mast cell haematological pathology (NMHP)., Methods: This study included 20 patients with CMCD/WVA + , 24 with CMCD/ANA - , 19 with WVA + , 6 with EBST and 5 with NMHP. We immunophenotyped MCs and basophils and compared baseline serum tryptase (bST) and both total and venom specific IgE in the different groups. For basophil studies, 13 healthy controls were also included., Results: Higher levels of bST were found in CMCD patients with wasp venom anaphylaxis, CMCD patients without anaphylaxis and EBST patients. Total IgE levels were highest in patients with wasp venom anaphylaxis with and without CMCD. Bone marrow MCs of patients with CMCD showed lower CD117 expression and higher expression of CD45, CD203c, CD63, CD300a and FcεRI. Within the CMCD population, patients with wasp venom anaphylaxis showed a higher expression of FcεRI as compared to patients without anaphylaxis. Expression of MRGPRX2 on MCs did not differ between the study populations. Basophils are phenotypically and functionally comparable between the different patient populations., Conclusion: Patients with CMCD show an elevated burden of aberrant activated MCs with a significant overexpression of FcεRI in patients with a wasp venom anaphylaxis., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. The reviewer RMC declared a past co-authorship with the authors DE, MF, AG, MMH, CB, ID, and VS to the handling Editor., (Copyright © 2022 Elst, De Puysseleyr, Ebo, Faber, Van Gasse, van der Poorten, Decuyper, Bridts, Mertens, Van Houdt, Hagendorens, De Clerck, Verlinden, Vermeulen, Maes, Berneman, Valent and Sabato.)

Published
2022
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34. Mast cell activation tests by flow cytometry: A new diagnostic asset?

Author

Elst J, van der Poorten MM, Van Gasse AL, De Puysseleyr L, Hagendorens MM, Faber MA, Van Houdt M, Passante E, Bahri R, Walschot M, Mertens C, Bridts CH, Sabato V, and Ebo DG

Subjects
Basophil Degranulation Test, Flow Cytometry methods, Humans, Nerve Tissue Proteins metabolism, Receptors, G-Protein-Coupled metabolism, Receptors, Neuropeptide metabolism, Drug Hypersensitivity diagnosis, Mast Cells
Abstract

Since the late nineties, evidence has accumulated that flow-assisted basophil activation test (BAT) might be an accessible and reliable method to explore the mechanisms governing basophil degranulation and diagnostic allowing correct prediction of the clinical outcome following exposure to the offending allergen(s) and cross-reactive structures for different IgE-dependent allergies and particular forms of autoimmune urticaria. Although the BAT offers many advantages over mediator release tests, it is left with some weaknesses that hinder a wider application. It is preferable to perform the BAT analysis within 4 h of collection, and the technique does not advance diagnosis in patients with non-responsive cells. Besides, the BAT is difficult to standardize mainly because of the difficulty to perform large batch analyses that might span over several days. This article reviews the status of flow cytometric mast cell activation test (MAT) using passively sensitized mast cells (MCs) with patients' sera or plasma (henceforth indicated as passive MAT; pMAT) using both MC lines and cultured MCs in the diagnosis of IgE-dependent allergies. In addition, this paper provides guidance for generating human MCs from peripheral blood CD34 + progenitor cells (PBCMCs) and correct interpretation of flow cytometric analyses of activated and/or degranulating cells. With the recent recognition of the mas-related G protein-coupled receptor X2 (MRGPRX2) occupation as a putative mechanism of immediate drug hypersensitivity reactions (IDHRs), we also speculate how direct activation of MCs (dMAT)-that is direct activation by MRGPRX2 agonists without prior passive sensitization-could advance paradigms for this novel endotype of IDHRs., (© 2021 John Wiley & Sons Ltd.)

Published
2021
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36. Basophil and mast cell activation tests by flow cytometry in immediate drug hypersensitivity: Diagnosis and beyond.

Author

Elst J, Sabato V, van der Poorten MM, Van Gasse AL, Van Houdt M, Bridts CH, Walschot M, Timmermans JP, Pintelon I, Mertens C, and Ebo DG

Subjects
Basophils drug effects, Basophils metabolism, Biomarkers blood, Drug Hypersensitivity blood, Drug Hypersensitivity immunology, Humans, Immunoglobulin E blood, Mast Cells drug effects, Mast Cells metabolism, Nerve Tissue Proteins blood, Phenotype, Predictive Value of Tests, Receptors, G-Protein-Coupled blood, Receptors, Neuropeptide blood, Basophil Degranulation Test, Basophils immunology, Cell Degranulation drug effects, Drug Hypersensitivity diagnosis, Flow Cytometry, Mast Cells immunology
Abstract

Immediate drug hypersensitivity reactions (IDHRs) constitute a significant health issue with serious consequences of diagnostic error. The primary diagnostics to document IDHRs usually consists of quantification of drug-specific IgE (sIgE) antibodies and skin tests. Unfortunately, the positive predictive value (PPV) and negative predictive value (NPV) of these tests are not absolutely, which leaves room for new tests. Over the last two decades, the basophil activation test (BAT), in which ex vivo activation of individual basophils is quantified by flow cytometry, has emerged as a reliable complementary diagnostic to document IDHRs, to explore allergenic recognition, to study cross-reactivity and to monitor therapy. However, the BAT is technically challenging requiring specialized personnel and equipment, fresh samples and the technique is lost as a diagnostic in patients showing a non-responder status of their cells. By consequence, the BAT has still not entered mainstream application. In contrast, mast cell activation tests (MATs) use serum samples that can be frozen, stored, and shipped to a recognized reference centre experienced in mast cell (MC) lines and/or cultures and capable of offering batch testing with necessary quality controls. This review does not only highlight the use of the BAT and MAT as diagnostics in IDHRs, but also outlines the potential of both techniques in further exploring and unveiling the mechanisms that govern drug-induced basophil and MC activation and degranulation., (Copyright © 2021 Elsevier B.V. All rights reserved.)

Published
2021
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37. Diagnosis of Primary Mast Cell Disorders in Anaphylaxis: Value of KIT D816V in Peripheral Blood.

Author

De Puysseleyr LP, Ebo DG, Elst J, Faber MA, Poorten MV, Van Gasse AL, Bridts CH, Mertens C, Van Houdt M, Hagendorens MM, Verlinden A, Vermeulen K, Maes MB, Berneman ZN, and Sabato V

Subjects
Humans, Mast Cells, Mutation, Proto-Oncogene Proteins c-kit genetics, Anaphylaxis diagnosis, Mastocytosis, Mastocytosis, Systemic diagnosis, Mastocytosis, Systemic genetics
Abstract

Background: Anaphylaxis is frequent in patients suffering from primary mast cell disorders (PMCDs). In patients without mastocytosis in the skin (MIS) and a baseline serum tryptase (bST) less than 30 ng/mL, the diagnosis of PMCD is challenging. In these patients, detection of the KIT D816V mutation in peripheral blood (PB) has been suggested as screening tool for a PMCD., Objective: In this study, we investigated whether KIT D816V in PB can contribute to the decision to perform a bone marrow (BM) biopsy in patients with anaphylaxis without MIS and a bST less than 30 ng/mL., Methods: We selected 74 patients with severe anaphylaxis without MIS and a bST less than 30 ng/mL. All underwent a BM biopsy. KIT D816V mutation was quantified in both PB and BM using digital droplet polymerase chain reaction (ddPCR)., Results: Diagnosis of a PMCD was established in 40 patients (54%). Median bST for patients with and without PMCD was, respectively, 9.5 ng/mL (range 4.2-27 ng/mL) and 4.9 ng/mL (range 2.2-20.3 ng/mL) (P <.001). KIT D816V in PB was detected in 16 out of 40 (40%) patients with PMCD. KIT D816V in BM was detected in 22 out of 40 (55%) patients with PMCD., Conclusions: In patients without MIS and a bST less than < 30 ng/mL who experience anaphylaxis, determination of KIT D816V mutation in PB is of limited help in deciding when to proceed to a BM biopsy. Therefore, KIT D816V in PB mutation analysis should be interpreted together with scoring tools to make a better assessment in identifying patients who should undergo BM biopsy., (Copyright © 2021 American Academy of Allergy, Asthma & Immunology. Published by Elsevier Inc. All rights reserved.)

Published
2021
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38. Culturing cells with mast cell phenotype and function: Comparison of peripheral blood and bone marrow as a source.

Author

Elst J, Ebo DG, Faber MA, Van Gasse AL, Decuyper II, van der Poorten MM, Bridts CH, De Puysseleyr LP, Mertens C, Hagendorens MM, De Clerck LS, Walschot M, Verlinden A, Berger D, Valent P, and Sabato V

Subjects
Biomarkers metabolism, Biopsy, Bone Marrow Cells metabolism, Bone Marrow Examination, Case-Control Studies, Cell Culture Techniques, Cell Degranulation, Cell Separation, Cells, Cultured, Flow Cytometry, Humans, Immunophenotyping, Mast Cells metabolism, Mastocytosis, Systemic genetics, Mastocytosis, Systemic immunology, Mastocytosis, Systemic metabolism, Phenotype, Time Factors, Bone Marrow Cells immunology, Mast Cells immunology, Mastocytosis, Systemic diagnosis
Abstract

Background: Studies on the mechanisms that govern mast cell (MC) functions are hindered by the difficulties in isolating sufficient numbers of these tissue-resident cells. Therefore, many research groups use cultured human MCs obtained out of progenitor cells. However, these culture methods significantly differ regarding primary source material, culture durations and conditions. Consequently, the finally obtained cells are likely to exhibit morphological, phenotypical and/or functional heterogeneity., Objective: To compare the phenotype and functionality of cells cultured from peripheral blood and bone marrow progenitor cells from patients with suspected clonal MC disease. These cells are designated as PBCMCs and BMCMCs, respectively., Methods: Twenty paired PBCMCs and BMCMCs cultures starting from CD34 + progenitor cells were compared. Cells were cultured for 4 weeks. Phenotyping included Giemsa and CD117 staining and flow cytometric staining for CD117, CD203c, FcεRI, MRGPRX2, CD300a, CD32, CD63 and CD25. Functional assessment included measurement of the up-regulation of CD63 after cross-linking of the high affinity receptor for IgE (FcεRI) with anti-FcεRI and ligation of MRGPRX2 with substance P., Results: PBCMCs and BMCMCs are phenotypically comparable. Functionally, after activation with anti-FcεRI and substance P, PBCMCs and BMCMCs show similar up-regulation of the lysosomal degranulation marker CD63. However, the yield of PBCMCs is higher than BMCMs and peripheral blood cultures are purer than bone marrow cultures., Conclusion: PBCMCs are an attractive alternative to the more difficult to obtain BMCMCs for the exploration of the complex mechanisms that govern IgE- and MRGPRX2-dependent MC activation and degranulation. Unlike BMCMCs, PBCMCs are easily accessible and enable repetitive analyses., (Copyright © 2021 Elsevier B.V. All rights reserved.)

Published
2021
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39. Novel Insights on MRGPRX2-Mediated Hypersensitivity to Neuromuscular Blocking Agents And Fluoroquinolones.

Author

Elst J, Maurer M, Sabato V, Faber MA, Bridts CH, Mertens C, Van Houdt M, Van Gasse AL, van der Poorten MM, De Puysseleyr LP, Hagendorens MM, Van Tendeloo VF, Lion E, Campillo-Davo D, and Ebo DG

Subjects
Anaphylaxis immunology, Anaphylaxis metabolism, Atracurium toxicity, Calcium Signaling drug effects, Cells, Cultured, Ciprofloxacin toxicity, Drug Hypersensitivity immunology, Drug Hypersensitivity metabolism, Humans, Immunoglobulin E immunology, Levofloxacin toxicity, Mast Cells immunology, Mast Cells metabolism, Nerve Tissue Proteins genetics, Receptors, G-Protein-Coupled genetics, Receptors, Neuropeptide genetics, Rocuronium toxicity, Time Factors, Anaphylaxis chemically induced, Anti-Bacterial Agents toxicity, Cell Degranulation drug effects, Drug Hypersensitivity etiology, Mast Cells drug effects, Nerve Tissue Proteins metabolism, Neuromuscular Nondepolarizing Agents toxicity, Receptors, G-Protein-Coupled metabolism, Receptors, Neuropeptide metabolism
Abstract

Neuromuscular blocking agents (NMBAs) like atracurium and rocuronium as well as fluoroquinolones (FQs) cause mast cell-mediated anaphylaxis by activating Mas-related G protein-coupled receptor X2 (MRGPRX2), but many questions remain unanswered. Here, we address three of them, namely whether primary human mast cells show similar activation by these drugs as murine mast cells and mast cell lines, how sugammadex protects from atracurium-induced MRGPRX2-mediated mast cell activation, and why some but not all patients treated with rocuronium develop anaphylaxis. We used peripheral blood-derived cultured mast cells from healthy donors and patients, assessed mast cell activation and degranulation by quantifying intracellular calcium and CD63 expression, respectively, and made use of MRGPRX2-silencing, via electroporation with Dicer-substrate small interfering RNAs, and single cell flow cytometric analyses. Atracurium, ciprofloxacin, and levofloxacin activated and degranulated primary human mast cells, but only MRGPRX2-positive and not MRGPRX2-negative or -silenced mast cells. Sugammadex attenuated the atracurium-induced and MRGPRX2-mediated activation and degranulation of human mast cells by reducing free atracurium levels. The mast cells of patients with IgE-independent anaphylaxis to rocuronium were similar, in their MRGPRX2 expression and function, to those of patients with IgE-mediated anaphylaxis. These findings further improve our understanding of the role and relevance of MRGPRX2-driven mast cell activation in anaphylactic reactions to NMBAs and FQs and may help to improve their prediction, prevention, and treatment., Competing Interests: MM has received honoraria (advisory board, speaker) and/or institutional grant/research support from Allakos, Amgen, Astra-Zeneca, Bayer, Dr. Pfleger, FAES, Genentech, GSK, Innate Pharma, Kyowa Kirin, Lilly, Merckle Recordati, Moxie, Novartis, Regeneron, Roche, Sanofi, MSD, UCB, and Uriach. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2021 Elst, Maurer, Sabato, Faber, Bridts, Mertens, Van Houdt, Van Gasse, van der Poorten, De Puysseleyr, Hagendorens, Van Tendeloo, Lion, Campillo-Davo and Ebo.)

Published
2021
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40. IgE-binding and mast cell-activating capacity of the homologue of the major birch pollen allergen and profilin from Cannabis sativa.

Author

Ebo DG, Decuyper II, Rihs HP, Mertens C, Van Gasse AL, van der Poorten MM, De Puysseleyr L, Faber MA, Hagendorens MM, Bridts CH, Sabato V, and Elst J

Subjects
Antigens, Plant, Betula, Cross Reactions, Humans, Immunoglobulin E, Mast Cells, Plant Proteins, Pollen, Profilins, Recombinant Proteins, Allergens, Cannabis
Published
2021
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41. Peripheral blood cultured mast cells: Phenotypic and functional outcomes of different culture protocols.

Author

Elst J, Sabato V, van der Poorten MM, Faber M, Van Gasse AL, De Puysseleyr LP, Bridts CH, Mertens C, Van Houdt M, Maurer M, Hagendorens MM, and Ebo DG

Subjects
Cells, Cultured immunology, Cells, Cultured metabolism, Culture Media metabolism, Flow Cytometry, Healthy Volunteers, Humans, Immunophenotyping, Mast Cells metabolism, Nerve Tissue Proteins metabolism, Receptors, G-Protein-Coupled metabolism, Receptors, Neuropeptide metabolism, Time Factors, Interleukin-6 metabolism, Mast Cells immunology, Primary Cell Culture methods
Abstract

Background: Mast cells (MCs) play a pivotal role in innate and adaptive immune responses. However, MCs are also involved in different pathologic conditions. Studies on the mechanisms that govern human MC functions are impeded by their limited and difficult recovery. Therefore, several research groups have developed protocols to culture human MCs from progenitor cells. These protocols vary with respect to culture duration and used maturation cytokines. How MCs obtained by different protocols differ in phenotype and functionality is currently unknown., Objective: To compare different protocols for the generation of human MCs from peripheral blood progenitors., Methods: Thirteen paired human MC cultures were investigated. MCs were cultured form CD34 + progenitors cells for 4 or 8 weeks and with or without the addition of IL-6. Phenotyping comprised staining for CD117, CD203c, FcεRI, MRGPRX2, CD300a and CD32. Functional studies included measurements of the up-regulation of CD63 and CD203c after allergen-specific cross-linking of sIgE/FcεRI complexes or ligation of MRGPRX2 with substance P and different drugs., Results: Cell cultures for 4 weeks in the presence of IL-6 consistently yielded the highest numbers of MCs. MCs cultured for 8 weeks with IL-6 showed more autofluorescence significantly impeding correct analyses of FcεRI and CD32. The density of FcεRI and CD32 was comparable between the different culture conditions. MRGPRX2 expression was significantly higher in the 8 week cultures. The density of CD300a was increased in the cultures with IL-6. Cells cultured for 8 weeks were more responsive to MRGPRX2 activation. In contrast, the 4-weeks cultures with IL-6 showed significantly higher allergen-specific activation., Conclusion: Four weeks of culture with IL-6 are sufficient to generate sizeable numbers of human mast cells from blood progenitors, thereby enabling simultaneous exploration of allergen-specific sIgE/FcεRI cross-linking and non-specific activation via MRGPRX2., (Copyright © 2021 Elsevier B.V. All rights reserved.)

Published
2021
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42. Principles, potential, and limitations of ex vivo basophil activation by flow cytometry in allergology: A narrative review.

Author

Ebo DG, Bridts CH, Mertens CH, and Sabato V

Subjects
Allergens immunology, Animals, Cross Reactions, Humans, Immunoglobulin E metabolism, Basophil Degranulation Test methods, Basophils immunology, Chronic Urticaria diagnosis, Flow Cytometry methods, Hypersensitivity diagnosis
Abstract

The major challenge of allergy diagnosis lies in the development of accessible and reliable diagnostics allowing correct prediction of the clinical outcome following exposure to the offending allergen(s) and cross-reactive structures. Since the late nineties, evidence has accumulated that flow-assisted analysis and quantification of ex vivo-activated basophils (according to the basophil activation test [BAT]) might meet this requirement for different IgE-dependent allergies and particular forms of autoimmune urticaria. Other so-called nondiagnostic applications of the BAT involve therapeutic monitoring, follow-up of natural histories, and identification of allergenic recognition sites. However, it has also become clear that appropriate use of the BAT necessitates knowledge about degranulation metrics and guidance to guarantee correct execution and interpretation of the results. Here, we have reviewed the most relevant applications and limitations of the BAT. Some personal statements and views about its perspectives are made., (Copyright © 2020 American Academy of Allergy, Asthma & Immunology. Published by Elsevier Inc. All rights reserved.)

Published
2021
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44. Mast cell activation test in chlorhexidine allergy: a proof of concept.

Author

Elst J, van der Poorten MM, Faber MA, Van Gasse AL, Garvey LH, Bridts CH, De Puysseleyr LP, Mertens C, Hagendorens MM, Sabato V, and Ebo DG

Subjects
Adult, Aged, Chlorhexidine immunology, Drug Hypersensitivity immunology, Female, Humans, Hypersensitivity, Immediate immunology, Male, Mast Cells metabolism, Middle Aged, Chlorhexidine adverse effects, Drug Hypersensitivity blood, Drug Hypersensitivity diagnosis, Hypersensitivity, Immediate blood, Hypersensitivity, Immediate diagnosis, Mast Cells immunology
Abstract

Background: Immediate drug hypersensitivity reactions are an increasing public health issue and a frequent cause of life-threatening anaphylaxis. Conventional confirmatory testing include skin tests and, for a few drugs, quantification of drug-specific immunoglobulin E (IgE) antibodies. However, none of these tests are absolutely predictive for the clinical outcome, and can yield false-negative and false-positive results. We performed a proof-of-concept study to assess whether a mast cell activation test could improve diagnosis of IgE-mediated chlorhexidine hypersensitivity, a common cause of perioperative anaphylaxis., Methods: Human mast cells were generated from CD34 + progenitor cells and sensitised with patients' sera to become IgE+ human mast cells (dMC IgE+ ), and then incubated with chlorhexidine to assess degranulation. We compared the diagnostic performance of this mast cell activation test with serum from patients with and without positive skin test and basophil activation test to chlorhexidine., Results: In dMC sensitised with sera from patients with a positive skin test and basophil activation test to chlorhexidine showed drug-specific and concentration-dependent degranulation upon stimulation with chlorhexidine, determined by surface upregulation of the degranulation marker CD63. In contrast, dMC sensitised with sera from patients with a negative skin test and basophil activation test to chlorhexidine were unresponsive in the mast cell activation test., Conclusions: Our study suggests that the mast cell activation test can be used to diagnose IgE/FcεRI-dependent immediate drug hypersensitivity reactions. It also shows potential to assess the clinical relevance of drug-specific IgE antibodies in their ability to elicit mast cell degranulation, and therefore discriminate between allergy and sensitisation. Extended studies are required to verify whether this technique can be used in other causes of perioperative anaphylaxis., (Copyright © 2020 British Journal of Anaesthesia. Published by Elsevier Ltd. All rights reserved.)

Published
2020
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48. CD154 (CD40L): A novel aid to document nonimmediate hypersensitivity to amoxicillin or amoxicillin clavulanic acid.

Author

Van Gasse AL, Ebo DG, Mertens CM, Bridts CH, Elst J, De Puysseleyr L, Faber MA, Hagendorens MM, De Clerck LS, and Sabato V

Subjects
Adolescent, Amoxicillin-Potassium Clavulanate Combination administration & dosage, Child, Child, Preschool, Female, Humans, Male, Amoxicillin-Potassium Clavulanate Combination adverse effects, CD40 Ligand blood, Drug Hypersensitivity blood, Drug Hypersensitivity diagnosis
Published
2020
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50. Hevea latex-associated allergies: piecing together the puzzle of the latex IgE reactivity profile.

Author

Ebo DG, Bridts CH, and Rihs HP

Subjects
Biomarkers, Cross Reactions, Disease Susceptibility, Female, Humans, Immunoglobulin E blood, Latex Hypersensitivity metabolism, Male, Proteome, Proteomics methods, Allergens immunology, Hevea adverse effects, Immunoglobulin E immunology, Latex Hypersensitivity diagnosis, Latex Hypersensitivity immunology, Rubber adverse effects
Abstract

Introduction : IgE-mediated Hevea latex allergy and associated food-allergies constitute a significant health issue with serious consequences of diagnostic error. Hence, there is a need for more reliable confirmatory diagnostics. Areas covered : Here, we summarize the major limitations of conventional tests using native extracts and describe how piecing together the IgE reactivity profile can benefit correct diagnosis in difficult cases in whom conventional tests yield equivocal or negative results. A diagnostic algorithm integrating traditional sIgE and component-resolved diagnosis (CRD) is presented. Expert opinion : Moreover, it is clear that the discoveries in the field of the Hevea latex proteome will contribute to our understandings and accurate approach of sometimes complex cross-reactivity phenomena that extend beyond the 'latex-fruit syndrome.'

Published
2020
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