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Chantran Y, Choi S, Roda C, Nicaise-Roland P, de Chaisemartin L, Chollet-Martin S, Arock M, Rancière F, Momas I. Higher levels of basal serum tryptase are associated with sensitization, FeNO, allergic morbidity, and lower control of allergic asthma in teenagers from the PARIS birth cohort. Allergy 2024. [PMID: 39155860 DOI: 10.1111/all.16284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2024] [Revised: 08/02/2024] [Accepted: 08/12/2024] [Indexed: 08/20/2024]
Affiliation(s)
- Yannick Chantran
- Environmental Risk Assessment (HERA) Team, CRESS, Université Paris Cité, Inserm, INRAE, Paris, France
- Molecular Platform for the Analysis of cKIT Mutations and Other Gene Defects, ECNM Reference Center, Saint-Antoine Hospital, DMU BioGeMH, AP-HP.Sorbonne University, Centre National de Référence des Mastocytoses, CEREMAST, Filière MaRIH, Paris, France
- Department of Biological Immunology, Saint-Antoine Hospital, DMU BioGeMH, AP-HP, Sorbonne University, Paris, France
| | - Simone Choi
- Environmental Risk Assessment (HERA) Team, CRESS, Université Paris Cité, Inserm, INRAE, Paris, France
- Department of Biological Immunology, Saint-Antoine Hospital, DMU BioGeMH, AP-HP, Sorbonne University, Paris, France
| | - Céline Roda
- Environmental Risk Assessment (HERA) Team, CRESS, Université Paris Cité, Inserm, INRAE, Paris, France
| | - Pascale Nicaise-Roland
- Department of Immunology, UF Autoimmunity and Hypersensitivity, Bichat Hospital, DMU BioGeM, AP-HP Nord, Paris, France
| | - Luc de Chaisemartin
- Department of Immunology, UF Autoimmunity and Hypersensitivity, Bichat Hospital, DMU BioGeM, AP-HP Nord, Paris, France
| | - Sylvie Chollet-Martin
- Department of Immunology, UF Autoimmunity and Hypersensitivity, Bichat Hospital, DMU BioGeM, AP-HP Nord, Paris, France
| | - Michel Arock
- Molecular Platform for the Analysis of cKIT Mutations and Other Gene Defects, ECNM Reference Center, Saint-Antoine Hospital, DMU BioGeMH, AP-HP.Sorbonne University, Centre National de Référence des Mastocytoses, CEREMAST, Filière MaRIH, Paris, France
- Department of Biological Hematology, Groupe Hospitalier Pitié-Salpêtrière-C. Foix, DMU BioGeMH, AP-HP, Sorbonne University, Paris, France
| | - Fanny Rancière
- Environmental Risk Assessment (HERA) Team, CRESS, Université Paris Cité, Inserm, INRAE, Paris, France
| | - Isabelle Momas
- Environmental Risk Assessment (HERA) Team, CRESS, Université Paris Cité, Inserm, INRAE, Paris, France
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Vlaeminck N, Poorten MLVD, Nygaard Madsen C, Bech Melchiors B, Michel M, Gonzalez C, Schrijvers R, Elst J, Mertens C, Saldien V, Vitte J, Garvey LH, Sabato V, Ebo DG. Paediatric perioperative hypersensitivity: the performance of the current consensus formula and the effect of uneventful anaesthesia on serum tryptase. BJA OPEN 2024; 9:100254. [PMID: 38261931 PMCID: PMC10797541 DOI: 10.1016/j.bjao.2023.100254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 12/16/2023] [Indexed: 01/25/2024]
Abstract
Background Paired sampling of acute (aST) and basal (bST) serum tryptase has been recommended when investigating patients with a suspected perioperative hypersensitivity (POH) reaction. In the current consensus formula, an aST value exceeding (1.2×bST+2) confirms mast cell activation. The current consensus formula has been validated in adults but not in children. Methods We prospectively included 96 children who underwent uneventful anaesthesia and sampled serum tryptase at baseline and 60-90 min after induction. Tryptase changes were then compared with those in 94 children with suspected POH who were retrospectively included from four reference centres in Belgium, France, and Denmark. Results We observed a median decrease in serum tryptase during uneventful anaesthesia of 0.41 μg L-1 (-15.9%; P<0.001). The current consensus formula identified mast cell activation in 31.9% of paediatric POH patients. After generating receiver operating characteristic curves through 100 repeated five-fold cross-validation, aST>bST+0.71 was identified as the optimal cut-off point to identify mast cell activation. This new paediatric formula has higher sensitivity than the current consensus formula (53.2% vs 31.9%, P<0.001) with a specificity of 96.9%. Analysis in the subpopulation where a culprit was identified and in grade 3-4 reactions similarly yielded higher sensitivity for the new paediatric formula when compared with the current consensus formula (85.3% vs 61.8%; P=0.008 and 78.0% vs 48.8%; P<0.001, respectively). Internally cross-validated sensitivity and specificity were 53.3% and 93.3%, respectively. Conclusions This is the first study suggesting the need for an adjusted formula in children to identify perioperative mast cell activation as tryptase is significantly lowered during uneventful anaesthesia. We propose a new formula (aST>bST+0.71) which performs significantly better than the current consensus formula in our multicentric paediatric population.
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Affiliation(s)
- Nils Vlaeminck
- Department of Anaesthesiology, Antwerp University Hospital, Belgium
| | - Marie-Line van der Poorten
- Department of Immunology - Allergology - Rheumatology, Antwerp University Hospital, Belgium
- Department of Paediatrics, Faculty of Medicine and Health Science, University of Antwerp, Antwerp University Hospital, Belgium
| | - Cecilie Nygaard Madsen
- Danish Anaesthesia Allergy Centre, Allergy Clinic, Department of Dermatology and Allergy, Copenhagen University Hospital-Herlev and Gentofte, Copenhagen, Denmark
| | - Birgitte Bech Melchiors
- Danish Anaesthesia Allergy Centre, Allergy Clinic, Department of Dermatology and Allergy, Copenhagen University Hospital-Herlev and Gentofte, Copenhagen, Denmark
| | - Moïse Michel
- Aix-Marseille Université, MEPHI, Marseille, France
- IHU Méditerranée Infection, Marseille, France
- CHU Nîmes, Laboratoire d’Immunologie, Nîmes, France
| | - Constance Gonzalez
- Aix-Marseille Univ, University Hospitals of Marseille, Laboratoire d’Immunologie, Marseille, France
| | - Rik Schrijvers
- Department of Microbiology, Immunology and Transplantation, Faculty of Medicine, Allergy and Clinical Immunology Research Group, KU Leuven, Leuven, Belgium
| | - Jessy Elst
- Department of Immunology - Allergology - Rheumatology, Antwerp University Hospital, Belgium
| | - Christel Mertens
- Department of Immunology - Allergology - Rheumatology, Antwerp University Hospital, Belgium
| | - Vera Saldien
- Department of Anaesthesiology, Antwerp University Hospital, Belgium
| | - Joana Vitte
- University of Reims Champagne-Ardenne, INSERM UMR-S 1205 P3CELL and Immunology Laboratory, University Hospital of Reims, Reims, France
| | - Lene H. Garvey
- Danish Anaesthesia Allergy Centre, Allergy Clinic, Department of Dermatology and Allergy, Copenhagen University Hospital-Herlev and Gentofte, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Denmark
| | - Vito Sabato
- Department of Immunology - Allergology - Rheumatology, Antwerp University Hospital, Belgium
| | - Didier G. Ebo
- Department of Immunology - Allergology - Rheumatology, Antwerp University Hospital, Belgium
- Department of Immunology and Allergology, AZ Jan Palfijn Ghent, Ghent, Belgium
- Infla-Med Centre of Excellence, University of Antwerp, Antwerp, Belgium
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Vinnes EW, Alnaes MB, Storaas T. Serum mast cell tryptase reference intervals in European populations. Clin Exp Allergy 2024; 54:145-147. [PMID: 37963601 DOI: 10.1111/cea.14421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 10/23/2023] [Accepted: 10/26/2023] [Indexed: 11/16/2023]
Affiliation(s)
- Erik Wilhelm Vinnes
- Department of Medical Biochemistry and Pharmacology, Haukeland University Hospital, Bergen, Norway
- Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Marie Bjørbak Alnaes
- Department of Occupational Medicine, Section for Allergology, Haukeland University Hospital, Bergen, Norway
| | - Torgeir Storaas
- Department of Occupational Medicine, Section for Allergology, Haukeland University Hospital, Bergen, Norway
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Klingebiel C, Belhocine W, Vitte J. Serum tryptase and drug hypersensitivity: why, how and what? A systematic review. Curr Opin Allergy Clin Immunol 2023; 23:294-299. [PMID: 37357783 DOI: 10.1097/aci.0000000000000916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2023]
Abstract
PURPOSE OF REVIEW Serum tryptase, a mast cell marker, provides clues for the mechanism, severity, and management of drug hypersensitivity induced by immunoglobulin E dependent or independent mast cell activation. RECENT FINDINGS The interpretation of serum tryptase levels has been challenged during the last 2 years by major advances in tryptase genetics and their rapid incorporation into clinical practice. On the contrary, new pathophysiological insight into nonmast cell-dependent immediate hypersensitivity has been gained. SUMMARY This review provides up-to-date information on the pathophysiology and recommended use and interpretation of tryptase in the context of drug hypersensitivity reactions as a function of their endotype.
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Affiliation(s)
| | | | - Joana Vitte
- University of Montpellier, IDESP, INSERM UMR UA 11, Montpellier
- Aix-Marseille Univ, IRD, APHM, MEPHI
- IHU Méditerranée Infection, Marseille, France
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Michel M, Klingebiel C, Vitte J. Tryptase in type I hypersensitivity. Ann Allergy Asthma Immunol 2023; 130:169-177. [PMID: 36084866 DOI: 10.1016/j.anai.2022.08.996] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 08/21/2022] [Accepted: 08/29/2022] [Indexed: 02/07/2023]
Abstract
Tryptase is currently the main mast cell biomarker available in medical practice. Tryptase determination is a quantitative test performed in serum or plasma for the diagnosis, stratification, and follow-up of mast cell-related conditions. The continuous secretion of monomeric α and β protryptases forms the baseline tryptase level. Transient, activation-induced release of tryptase is known as acute tryptase. Because mast cells are tissue-resident cells, the detection of an acute tryptase release in the bloodstream is protracted, with a delay of 15 to 20 minutes after the onset of symptoms and a peak at approximately 1 hour. Constitutive release of tryptase is a marker of mast cell number and activity status, whereas transient release of mature tryptase is a marker of mast cell degranulation. Although consensual as a concept, the application of this statement in clinical practice has only been clarified since 2020. For baseline tryptase to be used as a biomarker, reference values need to be established. In contrast, defining a transient increase using acute tryptase can only be achieved as a function of the baseline status.
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Affiliation(s)
- Moïse Michel
- Immunology Laboratory, Centre Hospitalier Universitaire Nîmes, Nîmes, France; Microbes, Evolution, Phylogénie et Infection (MEPHI), Aix-Marseille University, Marseille, France
| | | | - Joana Vitte
- Microbes, Evolution, Phylogénie et Infection (MEPHI), Aix-Marseille University, Marseille, France; Institut Hospitalo-Universitaire (IHU) Méditerranée Infection, Marseille, France; Montpellier University, Institut Desbrest d'Épidémiologie et de Santé Publique, Institut National de la Sante et de la Recherche Medicale, UMR UA 11, Montpellier, France.
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