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Margitta Worm, Dennis Ernst, Markus Kraller, Magda Babina
BACKGROUND: The clinical efficacy and safety of allergoid immunotherapy have been demonstrated in clinical trials. However, simultaneous monitoring of the immunological changes by allergoids versus allergens in the cells of the same individual has not been extensively performed, and the impact of concurrent Toll-like receptor 4 (TLR4) ligation has not been specified. METHODS: Three types of birch allergen were utilized: glutaraldehyde-treated allergoid (extract A), the same allergoid plus monophosphoryl lipid A (MPL), i...
February 21, 2017: International Archives of Allergy and Immunology
Pedro Giavina-Bianchi, Violeta Régnier Galvão, Matthieu Picard, Joana Caiado, Mariana C Castells
BACKGROUND: Rapid drug desensitization (RDD) has become a cornerstone in the management of immediate drug hypersensitivity reactions (DHRs) to chemotherapeutic agents. Because of the inherent risk of anaphylaxis during RDD, biomarkers to predict patients at risk of developing such severe reactions are needed. The basophil activation test (BAT) has been used in DHRs as a diagnostic tool. OBJECTIVE: We evaluated basophil CD63 and CD203c expression (BAT) as a biomarker to assess the safety and effectiveness of RDD in platinum compounds-allergic patients...
December 26, 2016: Journal of Allergy and Clinical Immunology in Practice
U Raap, M Gehring, S Kleiner, U Rüdrich, B Eiz-Vesper, H Haas, A Kapp, B F Gibbs
BACKGROUND: Basophils are important effector cells involved in the pathogenesis of inflammatory skin diseases including chronic urticaria which is associated by increased IL-31 serum levels. So far the effects of IL-31 on human basophils are unknown. OBJECTIVE: To analyse the functional role of IL-31 in basophil biology. METHODS: IL-31 expression was evaluated in skin samples derived from chronic spontaneous urticaria patients. Oncostatin M receptor (OSMR), IL-31 receptor A (RA) and IL-31 protein expressions were analysed on human basophils from healthy donors...
December 21, 2016: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
Bianca Lötzsch, Sabine Dölle, Stefan Vieths, Margitta Worm
BACKGROUND: Sensitization to hazelnut (HN) is frequent and requires clarification to determine whether this sensitization is clinically relevant. The aim of this study was to investigate basophil activation profiles in HN-sensitized and allergic subjects. METHODS: Basophil activation was determined by flow cytometric analyses of CD63 and CD203c expression using several HN allergen concentrations. Depending on their clinical reaction pattern, an oral allergy symptom group (OAS, n = 20), a systemic reaction group (n = 12) and a sensitized group without clinical symptoms (n = 20) were identified...
2016: Clinical and Translational Allergy
Suk Yeon Kim, Joo Hee Kim, Young Sook Jang, Jeong Hee Choi, Sunghoon Park, Yong Il Hwang, Seung Hun Jang, Ki Suck Jung
The basophil activation test (BAT) has been suggested as a complementary method for diagnosing drug allergies. The aim of this study was to evaluate the clinical utility of this test in patients with drug-induced anaphylaxis. In total, 19 patients, all of whom had a history of moderate to severe anaphylaxis, were enrolled. None of the causative drugs had available in vitro tests or reliable skin tests; these drugs included, among others, first and second-generation cephalosporins, H2 blockers, and muscle relaxants...
November 2016: Allergy, Asthma & Immunology Research
Stéphane Manzo-Silberman, Pascale Nicaise-Roland, Catherine Neukirch, Florence Tubach, Marie-Geneviève Huisse, Sylvie Chollet-Martin, Hélène Abergel, Fathi Driss, Toni Alfaiate, Nadine Ajzenberg, Philippe Gabriel Steg
AIMS: To determine antiplatelet efficacy after desensitization in patients with a history of aspirin hypersensitivity. METHODS AND RESULTS: We conducted a case-control study to evaluate the efficacy of aspirin 1 day (D1) and 6-8 weeks (W6-8) after desensitization. We also assessed ex vivo basophil reactivity to aspirin after desensitization. Cases were patients with coronary artery disease (CAD) and documented history of aspirin hypersensitivity who underwent rapid successful oral desensitization to aspirin...
August 5, 2016: European Heart Journal. Cardiovascular Pharmacotherapy
Kaori Mukai, Nicolas Gaudenzio, Sheena Gupta, Nora Vivanco, Sean C Bendall, Holden T Maecker, Rebecca S Chinthrajah, Mindy Tsai, Kari C Nadeau, Stephen J Galli
BACKGROUND: Basophil activation tests (BATs) have promise for research and for clinical monitoring of patients with allergies. However, BAT protocols vary in blood anticoagulant used and temperature and time of storage before testing, complicating comparisons of results from various studies. OBJECTIVE: We attempted to establish a BAT protocol that would permit analysis of blood within 24 hours of obtaining the sample. METHODS: Blood from 46 healthy donors and 120 patients with peanut allergy was collected into EDTA or heparin tubes, and samples were stored at 4°C or room temperature for 4 or 24 hours before performing BATs...
July 15, 2016: Journal of Allergy and Clinical Immunology
Arnold S Kirshenbaum, Glenn Cruse, Avanti Desai, Geethani Bandara, Maarten Leerkes, Chyi-Chia R Lee, Elizabeth R Fischer, Kevin J O'Brien, Bernadette R Gochuico, Kelly Stone, William A Gahl, Dean D Metcalfe
Hermansky-Pudlak Syndrome type-1 (HPS-1) is an autosomal recessive disorder caused by mutations in HPS1 which result in reduced expression of the HPS-1 protein, defective lysosome-related organelle (LRO) transport and absence of platelet delta granules. Patients with HPS-1 exhibit oculocutaneous albinism, colitis, bleeding and pulmonary fibrosis postulated to result from a dysregulated immune response. The effect of the HPS1 mutation on human mast cells (HuMCs) is unknown. Since HuMC granules classify as LROs along with platelet granules and melanosomes, we set out to determine if HPS-1 cutaneous and CD34+ culture-derived HuMCs have distinct granular and cellular characteristics...
2016: PloS One
N Cop, I I Decuyper, M A Faber, V Sabato, C H Bridts, M M Hagendorens, B Y De Winter, L S De Clerck, D G Ebo
BACKGROUND: 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. METHODS: Human mast cells were cultured from peripheral blood, phenotypically characterized, passively sensitized with allogenic IgE antibodies and finally stimulated by anti-IgE that cross-links IgE/FcεRI complexes...
July 12, 2016: Cytometry. Part B, Clinical Cytometry
Hiroyuki Shiono, Takuya Matsui, Tadashi Okada, Yoichiro Ito
We have developed a novel continuous flow-through cell separation method using a Percoll density gradient. This method can continuously separate a large number of cells into five fractions according to their densities. To apply this method to the separation of basophils, Percoll density gradients were modified to improve basophil enrichment. When a set of Percoll density gradients was prepared (1.071, 1.075, 1.080, 1.084, and 1.090 g/mL) the basophils in a healthy volunteer were enriched by an average of 23...
August 2016: Journal of Separation Science
Tahia D Fernández, Adriana Ariza, Francisca Palomares, María I Montañez, María Salas, Angela Martín-Serrano, Rubén Fernández, Arturo Ruiz, Miguel Blanca, Cristobalina Mayorga, María J Torres
Although fluoroquinolones (FQs) are generally well-tolerated antibiotics, increasing numbers of hypersensitivity reactions have been reported. These can be evaluated in vitro by basophil activation tests (BATs); however, sensitivity is not optimal. Many factors could influence sensitivity such as basophil activation markers. The objective of this study was to evaluate the influence of 2 different activations markers, CD63 and CD203c, on the sensitivity of BAT to FQ. We studied 17 patients with immediate allergic reactions to FQ...
June 2016: Medicine (Baltimore)
Yael Gernez, Jeffrey Waters, Rabindra Tirouvanziam, Leonore Herzenberg, Richard Moss
No abstract text is available yet for this article.
April 22, 2016: Journal of Allergy and Clinical Immunology
S Kleiner, G-J Braunstahl, U Rüdrich, M Gehring, B Eiz-Vesper, T A Luger, B Steelant, S F Seys, A Kapp, M Böhm, P W Hellings, U Raap
BACKGROUND: α-melanocyte-stimulating hormone (α-MSH) was shown to inhibit allergic airway inflammation and exert suppressive effects on human basophils. OBJECTIVE: This study aims to extend our current knowledge on the melanocortin 1 receptor (MC1R) expression in nasal tissue of patients with allergic rhinitis (AR) and functional effects of α-MSH in human basophils especially from patients with allergic rhinitis. METHODS: MC1R expression before and after nasal allergen provocation was studied in nasal mucosal tissue of AR patients and in a mouse model of allergic airway inflammation using immunofluorescence...
August 2016: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
Takuya Iwamoto, Hiroko Sugimoto, Tsutomu Tabata, Masahiro Okuda
PURPOSE: Drug desensitization has been found to be an effective option for carboplatin rechallenge in patients at risk for severe hypersensitivity reaction. However, identifying such patients requires precise clinical tests. This study was performed to evaluate the clinical utility of basophil CD203c to predict the timing of carboplatin-induced severe hypersensitivity reaction. METHODS: Here we report on 3 patients undergoing a carboplatin-desensitization protocol at Mie University Hospital...
June 2016: Clinical Therapeutics
N Harada, M Hiragun, M Mizuno, T Kawaguchi, K Ishii, Y Yanase, T Hiragun, Y Sugita, M Hide
No abstract text is available yet for this article.
2016: Journal of Investigational Allergology & Clinical Immunology
Shih Han Tsai, Kiyoshi Takeda
Adenosine 5'-triphosphate (ATP) is released from dying or damaged cells, as well as from activated cells. Once secreted, extracellular ATP induces several immune responses via P2X and P2Y receptors. Basophils and mast cells release ATP upon FcεRI-crosslinking, and ATP activates basophils and mast cells in an autocrine manner. Nucleotide-converting ectoenzymes, such as E-NTPD1, E-NTPD7, and E-NPP3, inhibit ATP-dependent immune responses by hydrolyzing ATP, thereby contributing to immune response regulation...
September 2016: Seminars in Immunopathology
S Giavi, Y M Vissers, A Muraro, R Lauener, A P Konstantinopoulos, A Mercenier, A Wermeille, F Lazzarotto, R Frei, R Bonaguro, S Summermatter, S Nutten, N G Papadopoulos
BACKGROUND: A major drawback of oral immunotherapy for food allergy is the possibility of severe side-effects. We assessed both safety and efficacy of a low allergenic hydrolysed egg (HydE) preparation used in a double-blind placebo-controlled randomized study in egg allergic children. METHODS: In a pilot multicentre study, 29 egg allergic patients (aged 1-5.5 years) were administered daily for 6 months 9 g HydE or placebo in a blinded, randomized manner. Safety was verified by oral food challenge to assess tolerance towards HydE at the start and efficacy by an open oral food challenge (OFC, primary outcome) at the end...
November 2016: Allergy
Alexandra F Santos, Natalia Bécares, Alick Stephens, Victor Turcanu, Gideon Lack
BACKGROUND: Basophil activation test (BAT) reproduces IgE-mediated allergic reactions in vitro and has been used as a diagnostic test. Different markers can be used to identify basophils in whole blood and have implications for the outcome of the test. We aimed to assess changes in the expression of CD123 and HLA-DR following basophil activation and to select the best gating strategy for BAT using these markers. METHODS: BAT was performed in whole blood from 116 children...
2016: Clinical and Translational Allergy
Masooma Abdullahi, Reza Ranjbaran, Soheaila Alyasin, Zeinab Keshavarz, Amin Ramezani, Abbas Behzad-Behbahani, Sedigheh Sharifzadeh
BACKGROUND: Asthma is very common in children and its diagnosis is based on clinical manifestations, which can be misdiagnosed as other respiratory diseases with similar signs and symptoms. OBJECTIVE: To analyze the expression of ST2L and CD203c in the diagnosis of pediatric asthma. METHODS: Basophils were purified from whole blood samples of patients and healthy controls using Ficol-Paque gradient and Basophil Isolation Kit. RNA extraction was done by RNX-Plus solution and after synthesis of cDNA, the gene expression was analyzed by means of real time PCR...
March 2016: Iranian Journal of Immunology: IJI
S Mommert, S Kleiner, M Gehring, B Eiz-Vesper, H Stark, R Gutzmer, T Werfel, U Raap
BACKGROUND: IgE-mediated cross-linking of FcεRI results in the release of mediators stored in basophil granules, such as histamine and proteases, and in the de novo synthesis of sulfidoleukotrienes. OBJECTIVE: In this study, we investigated the role of the histamine receptors, in particular that of the histamine H4 receptor (H4R), in modulating human basophil function. METHODS: The mRNA expression of the histamine receptors was measured by real-time PCR...
September 2016: Allergy
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