1
|
Bourgoin P, Dupont T, Agabriel C, Carsin A, Verles A, Cabanski M, Vitaliti A, Busnel JM. Possible alternative strategies to implement basophil activation testing in multicentric studies. CYTOMETRY. PART B, CLINICAL CYTOMETRY 2024; 106:392-404. [PMID: 38572669 DOI: 10.1002/cyto.b.22172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 02/15/2024] [Accepted: 03/26/2024] [Indexed: 04/05/2024]
Abstract
The Basophil Activation Test (BAT) enables flow cytometry characterization of basophil reactivity against specific allergenic molecules. The focus now revolves around democratizing this tool, but, as blood sample stability could be challenging, after having developed a simplified approach, herein, we aimed to characterize two strategies for implementing BAT in multicentric studies: store and ship blood before or after sample processing. Fresh heparin- and EDTA-anticoagulated whole blood samples followed both BAT workflows: "collect, store, process & analyze" or "collect, process, store & analyze". Storage temperatures of 18-25 °C or 2-8 °C and preservation times from 0 to 7 days were considered. Interleukin-3 was also evaluated. With the "collect, store, process & analyze" workflow, heparin-anticoagulated blood and 18-25 °C storage were better than other conditions. While remaining possible, basophil activation exhibited a possible reactivity decay after 24 h. Under the conditions tested, interleukin-3 had no role in enhancing basophil reactivity after storage. Conversely, the "collect, process, store & analyze" workflow demonstrated that either heparin- or EDTA-anticoagulated blood can be processed and kept up to 7 days at 18-25 °C or 2-8 °C before being analyzed. Various strategies can be implemented to integrate BAT in multicentric studies. The "collect, store, process & analyze" workflow remains a simplified logistical approach, but depending on time required to ship from the clinical centers to the reference laboratories, it might not be applicable, or should be used with caution. The "collect, process, store & analyze" workflow may constitute a workflow improvement to provide significant flexibility without impact on basophil reactivity.
Collapse
Affiliation(s)
- Pénélope Bourgoin
- Global Research Organization, Beckman Coulter Life Sciences, Marseille, France
| | - Thomas Dupont
- Global Research Organization, Beckman Coulter Life Sciences, Marseille, France
| | - Chantal Agabriel
- Department of Pediatric Emergency Medicine, Timone University Hospital, APHM, Marseille, France
| | - Ania Carsin
- Department of Pediatric Emergency Medicine, Saint Joseph Hospital, Marseille, France
| | - Aurélie Verles
- BioMarker Development, Novartis Institutes for Biomedical Research, Basel, Switzerland
| | - Maciej Cabanski
- BioMarker Development, Novartis Institutes for Biomedical Research, Basel, Switzerland
- Biomarkers and CDx, Monte Rosa Therapeutics, Basel, Switzerland
| | - Alessandra Vitaliti
- BioMarker Development, Novartis Institutes for Biomedical Research, Basel, Switzerland
| | - Jean-Marc Busnel
- Global Research Organization, Beckman Coulter Life Sciences, Marseille, France
| |
Collapse
|
2
|
Fernández-Lozano C, Rita CG, Barra-Castro A, de la Hoz Caballer B, Roldán E, Pueyo López C, Martinez-Botas J, Berges-Gimeno MP. Specific IgE and Basophil Activation Test by Microarray: A Promising Tool for Diagnosis of Platinum Compound Hypersensitivity Reactions. Int J Mol Sci 2024; 25:3890. [PMID: 38612700 PMCID: PMC11011729 DOI: 10.3390/ijms25073890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 03/26/2024] [Accepted: 03/26/2024] [Indexed: 04/14/2024] Open
Abstract
Drug hypersensitivity reactions (DHRs) to platinum-based compounds (PCs) are on the rise, and their personalized and safe management is essential to enable first-line treatment for these cancer patients. This study aimed to evaluate the usefulness of the basophil activation test by flow cytometry (BAT-FC) and the newly developed sIgE-microarray and BAT-microarray in diagnosing IgE-mediated hypersensitivity reactions to PCs. A total of 24 patients with DHRs to PCs (20 oxaliplatin and four carboplatin) were evaluated: thirteen patients were diagnosed as allergic with positive skin tests (STs) or drug provocation tests (DPTs), six patients were diagnosed as non-allergic with negative STs and DPTs, and five patients were classified as suspected allergic because DPTs could not be performed. In addition, four carboplatin-tolerant patients were included as controls. The BAT-FC was positive in 2 of 13 allergic patients, with a sensitivity of 15.4% and specificity of 100%. However, the sIgE- and BAT-microarray were positive in 11 of 13 DHR patients, giving a sensitivity of over 84.6% and a specificity of 90%. Except for one patient, all samples from the non-allergic and control groups were negative for sIgE- and BAT-microarray. Our experience indicated that the sIgE- and BAT-microarray could be helpful in the endophenotyping of IgE-mediated hypersensitivity reactions to PCs and may provide an advance in decision making for drug provocation testing.
Collapse
Affiliation(s)
- Carlos Fernández-Lozano
- Biochemistry-Research Department, Hospital Universitario Ramón y Cajal, Instituto Ramón y Cajal de Investigación Sanitaria, Carretera de Colmenar Km 9, 28034 Madrid, Spain;
- Allergology Department, Hospital Universitario Ramón y Cajal, Instituto Ramón y Cajal de Investigación Sanitaria, Carretera de Colmenar Km 9, 28034 Madrid, Spain; (A.B.-C.); (B.d.l.H.C.)
| | - Claudia Geraldine Rita
- Immunology Service, Hospital Universitario Ramón y Cajal, Instituto Ramón y Cajal de Investigación Sanitaria, Carretera de Colmenar Km 9, 28034 Madrid, Spain; (C.G.R.); (E.R.)
- Department of Medicine and Health Sciences, Alcalá University, 28801 Madrid, Spain
| | - Alicia Barra-Castro
- Allergology Department, Hospital Universitario Ramón y Cajal, Instituto Ramón y Cajal de Investigación Sanitaria, Carretera de Colmenar Km 9, 28034 Madrid, Spain; (A.B.-C.); (B.d.l.H.C.)
| | - Belén de la Hoz Caballer
- Allergology Department, Hospital Universitario Ramón y Cajal, Instituto Ramón y Cajal de Investigación Sanitaria, Carretera de Colmenar Km 9, 28034 Madrid, Spain; (A.B.-C.); (B.d.l.H.C.)
- Department of Medicine and Health Sciences, Alcalá University, 28801 Madrid, Spain
| | - Ernesto Roldán
- Immunology Service, Hospital Universitario Ramón y Cajal, Instituto Ramón y Cajal de Investigación Sanitaria, Carretera de Colmenar Km 9, 28034 Madrid, Spain; (C.G.R.); (E.R.)
| | - Cristina Pueyo López
- Pharmacy Department, Hospital Universitario Ramón y Cajal, Instituto Ramón y Cajal de Investigación Sanitaria, Carretera de Colmenar Km 9, 28034 Madrid, Spain;
| | - Javier Martinez-Botas
- Biochemistry-Research Department, Hospital Universitario Ramón y Cajal, Instituto Ramón y Cajal de Investigación Sanitaria, Carretera de Colmenar Km 9, 28034 Madrid, Spain;
| | - María Pilar Berges-Gimeno
- Allergology Department, Hospital Universitario Ramón y Cajal, Instituto Ramón y Cajal de Investigación Sanitaria, Carretera de Colmenar Km 9, 28034 Madrid, Spain; (A.B.-C.); (B.d.l.H.C.)
| |
Collapse
|
3
|
Eschenbacher W, Kim M, Mattos J, Lawrence M, Payne S, Borish L. Activation of platelet-adherent basophils in chronic rhinosinusitis with alcohol hypersensitivity. Ann Allergy Asthma Immunol 2022; 128:443-450. [PMID: 35063628 PMCID: PMC8977270 DOI: 10.1016/j.anai.2022.01.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 12/30/2021] [Accepted: 01/05/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND Alcohol hypersensitivity (AH), an exacerbation of respiratory symptoms in response to alcohol consumption, is common in aspirin-exacerbated respiratory disease and other forms of chronic rhinosinusitis (CRS). We speculated that these reactions relate to the activation of innate immune cells including basophils and, in particular, platelet-adherent basophils by polyphenolic compounds contained within eliciting alcoholic beverages. OBJECTIVE We investigated the absolute numbers of these cells in patients with AH and the ability of relevant polyphenolic compounds to cause cellular activation. METHODS Data were collected from 412 consecutive adults presenting to a tertiary care sinonasal clinic in whom the presence of AH was elicited. The CRS phenotype was determined and results from complete blood cell count and differential were analyzed. A subset of patients was invited to donate blood samples that were used to explore the ability of relevant compounds associated with alcohol consumption to activate platelet-nonadherent and platelet-adherent basophils. Activation was quantified by flow cytometry as up-regulated expression of CD63 and as secretion of lipid metabolites. RESULTS Of the 412 patients enrolled, 69 (16.7%) endorsed having AH. Significantly higher platelet counts were seen in patients reporting AH. Red wine extract and several polyphenolic compounds produced basophil activation and this was primarily observed among platelet-adherent basophils. Platelet activation was further established as the release of thromboxane B2. CONCLUSION The presence of AH is associated with significantly higher platelet levels and compounds present in alcoholic beverages can directly mediate both their activation and the activation of platelet-adherent basophils.
Collapse
Affiliation(s)
- William Eschenbacher
- Department of Medicine, University of Virginia Health System, Charlottesville, Virginia
| | - Margaret Kim
- Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - José Mattos
- Department of Otolaryngology, University of Virginia Health System, Charlottesville, Virginia
| | - Monica Lawrence
- Department of Medicine, University of Virginia Health System, Charlottesville, Virginia
| | - Spencer Payne
- Department of Medicine, University of Virginia Health System, Charlottesville, Virginia; Department of Otolaryngology, University of Virginia Health System, Charlottesville, Virginia
| | - Larry Borish
- Department of Medicine, University of Virginia Health System, Charlottesville, Virginia; Department of Microbiology, University of Virginia Health System, Charlottesville, Virginia.
| |
Collapse
|
4
|
|
5
|
Behrends J, Schwager C, Hein M, Scholzen T, Kull S, Jappe U. Innovative robust basophil activation test using a novel gating strategy reliably diagnosing allergy with full automation. Allergy 2021; 76:3776-3788. [PMID: 33973252 DOI: 10.1111/all.14900] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 04/19/2021] [Accepted: 04/29/2021] [Indexed: 12/22/2022]
Abstract
BACKGROUND Allergy is one of the most common chronic diseases in Europe. Therefore, an increased need for specific and sensitive diagnostic tests that truly detect allergy exists. This study aimed at establishing a highly specific high-throughput and automated basophil activation test (BAT) that proves the existence of an allergy with utmost probability. METHODS BAT from 1104 samples was analyzed; a novel gating strategy with three antibodies (FcεRIα, CD203c, CD63) was established and compared with our published protocol (12 antibodies). Based on the novel gating strategy, storage conditions, automated measurement, and analyses using R (1376 samples out of 1389) were optimized to set up a high-throughput BAT. RESULTS No differences in sensitivity and specificity were found between the novel three antibody (FcεRIα, CD203c, CD63) and the 12 antibody gating strategy or between automated and manually analyzed samples (saving up to 90% of labor time). The time frame for basophil activation measurement after blood donation has been extended considerably (whole blood storage ≤7 days (RT) and 17 days (4°C) prior to BAT preparation and measurement). Respective storage conditions were optimized for samples after stimulation, staining, and preparation (≤7 days (RT) and 28 days (4°C)). These achievements were confirmed by a nationwide ring trial showing robustness and applicability of our BAT on a variety of flow cytometers. CONCLUSION Our considerable optimizations overcame the hurdles that until now prevented the BAT from being used as high-throughput allergy diagnostic test in routine laboratories and shall allow for collaborative studies between clinics and research centers.
Collapse
Affiliation(s)
- Jochen Behrends
- Core Facility Fluorescence Cytometry Research Center Borstel Leibniz Lung Center Borstel Germany
| | - Christian Schwager
- Division of Clinical and Molecular Allergology Priority Area Asthma and Allergy Airway Research Center North (ARCN) German Center for Lung Research (DZL Borstel Germany
| | - Martina Hein
- Core Facility Fluorescence Cytometry Research Center Borstel Leibniz Lung Center Borstel Germany
| | - Thomas Scholzen
- Core Facility Fluorescence Cytometry Research Center Borstel Leibniz Lung Center Borstel Germany
| | - Skadi Kull
- Division of Clinical and Molecular Allergology Priority Area Asthma and Allergy Airway Research Center North (ARCN) German Center for Lung Research (DZL Borstel Germany
| | - Uta Jappe
- Division of Clinical and Molecular Allergology Priority Area Asthma and Allergy Airway Research Center North (ARCN) German Center for Lung Research (DZL Borstel Germany
- Interdisciplinary Allergy Outpatient Clinic Department of Pneumology University of Lübeck Lübeck Germany
| |
Collapse
|
6
|
Briceno Noriega D, Teodorowicz M, Savelkoul H, Ruinemans-Koerts J. The Basophil Activation Test for Clinical Management of Food Allergies: Recent Advances and Future Directions. J Asthma Allergy 2021; 14:1335-1348. [PMID: 34754200 PMCID: PMC8572092 DOI: 10.2147/jaa.s237759] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 09/06/2021] [Indexed: 12/15/2022] Open
Abstract
The basophil activation test (BAT) is an ex vivo functional assay that measures by flow cytometry the degree of basophil degranulation after stimulation with an allergen. In recent years, there has been an increased interest in the diagnostic value of the BAT as it has the potential to mimic the clinical phenotype of sIgE sensitized patients, in contrast to allergen-specific IgE levels. This diagnostic potential would be of particular interest for food allergies present early in life such as peanut, cow’s milk and eggs, which require an expensive, time-consuming and patient unfriendly oral food challenge (OFC) for diagnosis. However, routine applications of the BAT for clinical use are not yet feasible due to the lack of standardized protocols and large clinical validation studies. This review will summarize the current data regarding the application of the BAT in food allergy (FA) for cow’s milk, egg and peanut, being the most common causes of FA in children. Additionally, it will discuss the hurdles for widespread clinical use of the BAT and possible future directions for this diagnostic procedure.
Collapse
Affiliation(s)
- Daniela Briceno Noriega
- Cell Biology and Immunology Group, Wageningen University & Research, Wageningen, the Netherlands
| | - Malgorzata Teodorowicz
- Cell Biology and Immunology Group, Wageningen University & Research, Wageningen, the Netherlands
| | - Huub Savelkoul
- Cell Biology and Immunology Group, Wageningen University & Research, Wageningen, the Netherlands
| | - Janneke Ruinemans-Koerts
- Cell Biology and Immunology Group, Wageningen University & Research, Wageningen, the Netherlands.,Laboratory of Clinical Chemistry and Hematology, Rijnstate Hospital, Arnhem, the Netherlands
| |
Collapse
|
7
|
Santos AF, Alpan O, Hoffmann H. Basophil activation test: Mechanisms and considerations for use in clinical trials and clinical practice. Allergy 2021; 76:2420-2432. [PMID: 33475181 DOI: 10.1111/all.14747] [Citation(s) in RCA: 117] [Impact Index Per Article: 39.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 11/15/2020] [Accepted: 11/17/2020] [Indexed: 12/11/2022]
Abstract
The basophil activation test (BAT) is a functional assay that measures the degree of degranulation following stimulation with allergen or controls by flow cytometry. It correlates directly with histamine release. From the dose-response curve resulting from BAT in allergic patients, basophil reactivity (%CD63+ basophils) and basophil sensitivity (EC50 or similar) are the main outcomes of the test. BAT takes into account all characteristics of IgE and allergen and thus can be more specific than sensitization tests in the diagnosis of allergic disease. BAT reduces the need for in vivo procedures, such as intradermal tests and allergen challenges, which can cause allergic reactions of unpredictable severity. As it closely reflects the patients' phenotype in most cases, it may be used to support the diagnosis of food, venom and drug allergies and chronic urticaria, to monitor the natural resolution of food allergies and to predict and monitor clinical the response to immunomodulatory treatments, such as allergen-specific immunotherapy and biologicals. Clinical application of BAT requires analytical validation, clinical validation, standardization of procedures and quality assurance to ensure reproducibility and reliability of results. Currently, efforts are ongoing to establish a platform that could be used by laboratories in Europe and in the USA for quality assurance and certification.
Collapse
Affiliation(s)
- Alexandra F. Santos
- Department of Women and Children's Health (Pediatric Allergy) School of Life Course Sciences Faculty of Life Sciences and Medicine King's College London London UK
- Peter Gorer Department of Immunobiology School of Immunology and Microbial Sciences King's College London London UK
- Asthma UK Centre in Allergic Mechanisms of Asthma London UK
- Children's Allergy ServiceEvelina London Children's HospitalGuy's and St Thomas' Hospital London UK
| | | | - Hans‐Jürgen Hoffmann
- Department of Clinical Medicine Aarhus University Aarhus Denmark
- Department of Respiratory Diseases and Allergy Aarhus University Hospital Aarhus Denmark
| |
Collapse
|
8
|
Carstensen S, Benediktus E, Litzenburger T, Hohlfeld JM, Müller M. Basophil activation test: Assay precision and BI 1002494 SYK inhibition in healthy and mild asthmatics. Cytometry A 2021; 101:86-94. [PMID: 33797185 DOI: 10.1002/cyto.a.24338] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 02/09/2021] [Accepted: 03/17/2021] [Indexed: 12/26/2022]
Abstract
BACKGROUND Application of basophil activation test (BAT) in clinical trials requires assay validity. Whether assay variability differs between healthy and asthmatic subjects is mostly unknown. This study compares basophil stimulation using blood from healthy and asthmatic subjects with or without inhibition of spleen tyrosine kinase (SYK). METHODS Whole blood of healthy and mild asthmatic subjects was stimulated with anti-dinitrophenyl (DNP) IgE/DNP bovine serum albumin and anti-IgE. Basophil activation was detected by CD63 and CD203c expression. CD63 expression levels were compared with serum IgE levels. Three operators repeated experiments with three subjects each from both groups at 3 days to observe assay precision. The effect of the SYK inhibitor BI 1002494 was assessed in BAT for both healthy and asthmatic subjects. RESULTS BAT was reproducible in both groups. Acceptance criteria of <25% CV were mostly fulfilled. Stimulation with anti-DNP (p < 0.001, r = -0.80) but not anti-IgE (p = 0.74, r = 0.05) was related to serum IgE with levels > 200 IU/ml limiting anti-DNP stimulation. BI 1002494 IC50 values were 497 nM and 1080 nM in healthy and 287 nM and 683 nM in asthmatics for anti-DNP and anti-IgE stimulation, respectively. CONCLUSION BAT, performed with blood from healthy or asthmatic subjects, is a robust test for the measurement of a physiological response in clinical trials. Blood from asthmatic donors with serum IgE > 200 IU/ml is less feasible when using anti-DNP stimulation. SYK inhibition was not affected by disease status.
Collapse
Affiliation(s)
- Saskia Carstensen
- Department of Biomarker Analysis and Development, Fraunhofer Institute of Toxicology and Experimental Medicine, Hannover, Germany
| | - Ewald Benediktus
- Department of Translational Medicine and Clinical Pharmacology, Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach, Germany
| | - Tobias Litzenburger
- Department of Translational Medicine and Clinical Pharmacology, Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach, Germany
| | - Jens M Hohlfeld
- Division of Airway Research, Fraunhofer Institute of Toxicology and Experimental Medicine, Hannover, Germany.,Member of the German Center for Lung Research, Hannover, Germany.,Department of Respiratory Medicine, Hannover Medical School, Hannover, Germany
| | - Meike Müller
- Department of Biomarker Analysis and Development, Fraunhofer Institute of Toxicology and Experimental Medicine, Hannover, Germany
| |
Collapse
|
9
|
Berger AE, Durrieu C, Dzviga C, Perrot JL, Lambert C. Human peripheral basophils extended phenotype shows a high expression of CD244 immuno-regulatory receptor. J Immunol Methods 2021; 492:112951. [PMID: 33493550 DOI: 10.1016/j.jim.2020.112951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 12/16/2020] [Accepted: 12/16/2020] [Indexed: 10/22/2022]
Abstract
INTRODUCTION Basophils play a major physio-pathological role in hypersensitivity related diseases. Basophils express high affinity Immunoglobulin (Ig) E receptors (FcεRI), IgG and complement regulatory. Basophils also have immunoregulatory activity through interaction with T cells. The aim of this study was to look for the expression of markers reflecting the activation status of peripheral Basophil in healthy donors. METHOD the study was performed on 29 healthy donors, 62% females with a mean age of 50.1 + 17.0 years. Basophils were identified on their expression of CD123 without HLA-DR and/or CD193 in two 8 colors panels including CD46, CD55, CD59, CD203c, CD32 (FcγRII), CD64 (FcγRIII), CD163, CD137L (4-1BBL), CD252 (OX40L), CD244 (2B4) and CD3 on whole blood. Basophil activation with anti IgE was performed on 14 donors. RESULTS AND DISCUSSION Our results confirmed the Basophil expression of CD123, CD193 and CD203 (the latter is strongly increased under stimulation). Complement regulatory proteins (CD46, CD55, CD59) were expressed at the same levels as on other leukocytes; CD46, CD59 expression being slightly increased under stimulation. CD32 and CD163 scavenger were slightly higher than on lympho and not influenced by activation. CD252 or CD137L were expressed at low levels and significantly induced by stimulation. Most of all, CD244 was highly expressed on Basophils as compared to any other leukocytes in fresh peripheral blood. CONCLUSIONS Our study shows that human resting Basophils express IgE and IgG Fc receptors and check point receptor CD244 that could potentially play a role in their previously reported immunoregulatory activity in sensitization and even in tumor immune escape.
Collapse
Affiliation(s)
- Anne-Emmanuelle Berger
- Immunology laboratory, University Hospital Saint-Etienne, 42055 Saint-Etienne, Cedex 2, France
| | - Coralie Durrieu
- Immunology laboratory, University Hospital Saint-Etienne, 42055 Saint-Etienne, Cedex 2, France
| | - Charles Dzviga
- Allergology unit, University Hospital Saint-Etienne, 42055 Saint-Etienne, Cedex 2, France
| | - Jean-Luc Perrot
- Dermatology department, University Hospital Saint-Etienne, 42055 Saint-Etienne, Cedex 2, France
| | - Claude Lambert
- Immunology laboratory, University Hospital Saint-Etienne, 42055 Saint-Etienne, Cedex 2, France; Allergology unit, University Hospital Saint-Etienne, 42055 Saint-Etienne, Cedex 2, France.
| |
Collapse
|
10
|
Investigation of Basophil Activation Test for Diagnosing Milk and Egg Allergy in Younger Children. J Clin Med 2020; 9:jcm9123942. [PMID: 33291359 PMCID: PMC7762017 DOI: 10.3390/jcm9123942] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 11/26/2020] [Accepted: 12/03/2020] [Indexed: 01/28/2023] Open
Abstract
In children with concomitant food allergy and atopic dermatitis (AD), uncovering the causative food allergen is more arduous. We evaluated the basophil activation test (BAT) for its diagnostic value in children, including those with AD, for milk or egg allergy. We simultaneously measured serum-specific immunoglobulin E (sIgE) levels and performed BATs for cow’s milk and egg white. We compared their overall diagnostic performance using the area under the receiver operating characteristic curve (AUC) with the Delong method and compared them in children with AD. Analyses were completed for 75 children for milk allergy and for 85 children for egg allergy. The sIgE and percentage of basophils with the expression of CD63 were correlated for both milk (r = 0.384, p < 0.001) and egg (r = 0.557, p < 0.001). The AUC of sIgE (0.701) for milk allergy was significantly increased when combined with the BAT (0.805; p = 0.029). In children with AD, the AUC of the BAT (0.924) for milk allergy was significantly larger than that of sIgE (0.701; p = 0.017). The BAT is a potentially useful diagnostic tool for milk allergy in children when combined with sIgE. Moreover, it may be a surrogate marker for milk allergy in children with AD.
Collapse
|
11
|
Orinska Z, Hagemann PM, Halova I, Draber P. Tetraspanins in the regulation of mast cell function. Med Microbiol Immunol 2020; 209:531-543. [PMID: 32507938 PMCID: PMC7395004 DOI: 10.1007/s00430-020-00679-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Accepted: 05/06/2020] [Indexed: 12/13/2022]
Abstract
Mast cells (MCs) are long-living immune cells highly specialized in the storage and release of different biologically active compounds and are involved in the regulation of innate and adaptive immunity. MC degranulation and replacement of MC granules are accompanied by active membrane remodelling. Tetraspanins represent an evolutionary conserved family of transmembrane proteins. By interacting with lipids and other membrane and intracellular proteins, they are involved in organisation of membrane protein complexes and act as "molecular facilitators" connecting extracellular and cytoplasmic signaling elements. MCs express different tetraspanins and MC degranulation is accompanied by changes in membrane organisation. Therefore, tetraspanins are very likely involved in the regulation of MC exocytosis and membrane reorganisation after degranulation. Antiviral response and production of exosomes are further aspects of MC function characterized by dynamic changes of membrane organization. In this review, we pay a particular attention to tetraspanin gene expression in different human and murine MC populations, discuss tetraspanin involvement in regulation of key MC signaling complexes, and analyze the potential contribution of tetraspanins to MC antiviral response and exosome production. In-depth knowledge of tetraspanin-mediated molecular mechanisms involved in different aspects of the regulation of MC response will be beneficial for patients with allergies, characterized by overwhelming MC reactions.
Collapse
Affiliation(s)
- Zane Orinska
- Division of Experimental Pneumology, Research Center Borstel, Leibniz Lungenzentrum, Airway Research Center North, German Center for Lung Research (DZL), Borstel, Germany.
| | - Philipp M Hagemann
- Division of Experimental Pneumology, Research Center Borstel, Leibniz Lungenzentrum, Airway Research Center North, German Center for Lung Research (DZL), Borstel, Germany
| | - Ivana Halova
- Department of Signal Transduction, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Petr Draber
- Department of Signal Transduction, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
| |
Collapse
|
12
|
Integrating basophil activation tests into evaluation of perioperative anaphylaxis to neuromuscular blocking agents. Br J Anaesth 2019; 123:e135-e143. [DOI: 10.1016/j.bja.2019.02.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 02/07/2019] [Accepted: 02/24/2019] [Indexed: 01/11/2023] Open
|