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Solé D, Kuschnir FC, Pastorino AC, Constantino CF, Galvão C, Chong E Silva DC, Baptistella E, Goudouris ES, Sakano E, Ejzenbaum F, Matsumoto FY, Mizoguchi FM, Aarestrup FM, Wandalsen GF, Chong Neto HJ, Brito de Oliveira JV, Faibes Lubianca Neto J, Rizzo MCV, Silva Chavarria MLF, Urrutia-Pereira M, Filho NAR, de Paula Motta Rubini N, Mion O, Piltcher OB, Ramos RT, Francesco RD, Roithmann R, Anselmo-Lima WT, Romano FR, de Mello Júnior JF. V Brazilian Consensus on Rhinitis - 2024. Braz J Otorhinolaryngol 2024; 91:101500. [PMID: 39388827 DOI: 10.1016/j.bjorl.2024.101500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2024] [Accepted: 08/17/2024] [Indexed: 10/12/2024] Open
Abstract
Since we published the "IV Brazilian Consensus on Rhinitis", in2017, several advances have been achieved and have enabled a further understanding of the different aspects of "Rhinitis". This new guideline, developed jointly by ASBAI, SBP and SBORL, represents a relevant milestone in the updated and integrated management of the different forms of the disease, and it aims to unify evidence-based approaches to improve the diagnosis and treatment of this common and often underestimated condition. The document covers a wide range of topics, including clear definitions of the different phenotypes and endotypes of rhinitis, risk factors, updated diagnostic criteria, and recommended methods for clinical and laboratory investigation. We stress the importance of detailed clinical history and objective assessment, as well as tools for control and assessing severity tools an accurate diagnostic approach to the disease. Regarding treatment, it emphasizes the treatment customization, considering the severity of symptoms, the presence of comorbidities and the impact on the patient's quality of life. We discuss different drug treatment, in addition to non-pharmacological measures, such as environmental control and specific immunotherapy; and the possible role of immunobiological agents. Furthermore, the consensus addresses issues related to patient education, prevention and management of special situations, such as rhinitis in children, in pregnant women and in the elderly. In short, the "V Brazilian Consensus on Rhinitis" represents a comprehensive and updated guide for healthcare professionals involved in the diagnosis and management of rhinitis, aiming to improve patients' quality of life through an integrated and evidence-based approach.
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Affiliation(s)
- Dirceu Solé
- Universidade Federal de São Paulo, Escola Paulista de Medicina, São Paulo, SP, Brazil; Sociedade Brasileira de Pediatria, Rio de Janeiro, RJ, Brazil
| | - Fábio Chigres Kuschnir
- Associação Brasileira de Alergia e Imunologia, São Paulo, SP, Brazil; Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Antônio Carlos Pastorino
- Sociedade Brasileira de Pediatria, Rio de Janeiro, RJ, Brazil; Universidade de São Paulo, São Paulo, SP, Brazil
| | - Clóvis F Constantino
- Sociedade Brasileira de Pediatria, Rio de Janeiro, RJ, Brazil; Universidade de Santo Amaro, São Paulo, SP, Brazil
| | - Clóvis Galvão
- Associação Brasileira de Alergia e Imunologia, São Paulo, SP, Brazil; Universidade de São Paulo, São Paulo, SP, Brazil
| | - Débora Carla Chong E Silva
- Sociedade Brasileira de Pediatria, Rio de Janeiro, RJ, Brazil; Universidade Federal do Paraná́, Curitiba, PR, Brazil
| | - Eduardo Baptistella
- Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial, São Paulo, SP, Brazil
| | - Ekaterini Simões Goudouris
- Sociedade Brasileira de Pediatria, Rio de Janeiro, RJ, Brazil; Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Eulália Sakano
- Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial, São Paulo, SP, Brazil; Universidade Estadual de Campinas, Campinas, SP, Brazil
| | - Fábio Ejzenbaum
- Sociedade Brasileira de Pediatria, Rio de Janeiro, RJ, Brazil; Faculdade de Ciências Médicas da Santa Casa de São Paulo, São Paulo, SP, Brazil
| | - Fausto Yoshio Matsumoto
- Universidade Federal de São Paulo, Escola Paulista de Medicina, São Paulo, SP, Brazil; Sociedade Brasileira de Pediatria, Rio de Janeiro, RJ, Brazil
| | - Flavio Massao Mizoguchi
- Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial, São Paulo, SP, Brazil
| | - Fernando Monteiro Aarestrup
- Associação Brasileira de Alergia e Imunologia, São Paulo, SP, Brazil; Universidade Federal de Juiz de Fora, Juiz de Fora, MG, Brazil
| | - Gustavo F Wandalsen
- Universidade Federal de São Paulo, Escola Paulista de Medicina, São Paulo, SP, Brazil; Sociedade Brasileira de Pediatria, Rio de Janeiro, RJ, Brazil
| | - Herberto José Chong Neto
- Sociedade Brasileira de Pediatria, Rio de Janeiro, RJ, Brazil; Universidade Federal do Paraná́, Curitiba, PR, Brazil
| | | | - José Faibes Lubianca Neto
- Sociedade Brasileira de Pediatria, Rio de Janeiro, RJ, Brazil; Fundação Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brazil
| | | | | | - Marilyn Urrutia-Pereira
- Associação Brasileira de Alergia e Imunologia, São Paulo, SP, Brazil; Universidade Federal do Pampa, Uruguaiana, RS, Brazil
| | - Nelson Augusto Rosário Filho
- Associação Brasileira de Alergia e Imunologia, São Paulo, SP, Brazil; Universidade Federal do Paraná́, Curitiba, PR, Brazil
| | - Norma de Paula Motta Rubini
- Associação Brasileira de Alergia e Imunologia, São Paulo, SP, Brazil; Universidade Federal do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Olavo Mion
- Universidade de São Paulo, São Paulo, SP, Brazil; Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial, São Paulo, SP, Brazil
| | - Otávio Bejzman Piltcher
- Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial, São Paulo, SP, Brazil; Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazi
| | - Regina Terse Ramos
- Sociedade Brasileira de Pediatria, Rio de Janeiro, RJ, Brazil; Universidade Federal da Bahia, Salvador, BA, Brazil
| | - Renata Di Francesco
- Sociedade Brasileira de Pediatria, Rio de Janeiro, RJ, Brazil; Universidade de São Paulo, São Paulo, SP, Brazil
| | - Renato Roithmann
- Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial, São Paulo, SP, Brazil; Universidade Luterana do Brasil, Canos, RS, Brazil
| | - Wilma Terezinha Anselmo-Lima
- Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial, São Paulo, SP, Brazil; Universidade de São Paulo, Faculdade de Medicina de Ribeirão Preto, Ribeirão Preto, SP, Brazil
| | - Fabrizio Ricci Romano
- Universidade de São Paulo, São Paulo, SP, Brazil; Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial, São Paulo, SP, Brazil
| | - João Ferreira de Mello Júnior
- Universidade de São Paulo, São Paulo, SP, Brazil; Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial, São Paulo, SP, Brazil.
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Olivry T, Mas-Fontao A, Jacquenet S, Aumayr M, Tsukui T, Gomord V, Faye L, Favrot C. Identification of cross-reactive allergens between the Dermatophagoides farinae house dust mite and the Toxocara canis nematode in dogs with suspected allergies. Vet Dermatol 2024. [PMID: 39210736 DOI: 10.1111/vde.13295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 07/08/2024] [Accepted: 08/16/2024] [Indexed: 09/04/2024]
Abstract
BACKGROUND Immunoglobulin (Ig)E cross-reactivity has been shown between Dermatophagoides farinae (Df; house dust mite) and the nematode Toxocara canis (Tc), yet its allergen basis is unknown. OBJECTIVES To identify the Df allergens IgE-cross-reactive with those of Tc. ANIMALS Archived sera from 73 dogs with suspected allergy sensitised to Df. MATERIALS AND METHODS We performed a combination of Pet Allergy Xplorer (PAX) and enzyme-linked immunosorbent assay (ELISA) inhibitions with excretory-secretory and somatic (i.e. nematode body) extracts of Tc or recombinant Tc tropomyosin on coats of Df, Der f 15 and Zen-1 (ELISA) or PAX allergens. RESULTS The ELISA and PAX inhibitions established that there is mutual yet variable cross-reactivity between the Tc excretory-secretory extract, purified Der f 15 and purified Zen-1. This cross-reactivity is likely to involve cross-reactive glycans, as there is no inhibition between the Tc excretory-secretory extract and recombinant Der f 15 without its predicted natural O-glycans. We also confirmed a heterogeneous cross-reactivity between the somatic Tc extract and Der p 11 (paramyosin), as well as between the recombinant Toxo c 3 and Der p 10 tropomyosins. The cross-reactivity among tropomyosins and paramyosins is likely to involve peptidic epitopes, as these recombinant allergens are not glycosylated. CONCLUSIONS AND CLINICAL RELEVANCE In dogs with suspected allergies, the cross-reactivity between Tc and Df for dogs is complex and heterogeneous. Some of the cross-reactive IgE recognises shared glycans on Der f 15 and Zen-1, while some targets peptidic epitopes on shared paramyosins and tropomyosins. We do not exclude that additional cross-reactive allergens between Df and Tc also might exist.
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Affiliation(s)
| | | | | | | | | | | | - Loïc Faye
- Angany Innovation and Angany Genetics, Val-de-Reuil, France
| | - Claude Favrot
- Dermatology Unit, Clinic for Small Animal Internal Medicine, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
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Zimbru RI, Zimbru EL, Ordodi VL, Bojin FM, Crîsnic D, Grijincu M, Mirica SN, Tănasie G, Georgescu M, Huțu I, Haidar L, Păunescu V, Panaitescu C. The Impact of High-Fructose Diet and Co-Sensitization to House Dust Mites and Ragweed Pollen on the Modulation of Airway Reactivity and Serum Biomarkers in Rats. Int J Mol Sci 2024; 25:8868. [PMID: 39201554 PMCID: PMC11354849 DOI: 10.3390/ijms25168868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2024] [Accepted: 08/10/2024] [Indexed: 09/02/2024] Open
Abstract
The topic of ragweed pollen (RW) versus house dust mites (HDMs) has often been deliberated, but the increasing incidence of co-sensitization between them has been scarcely addressed. Utilizing Sprague Dawley rats, we explored the effects of co-sensitization with the combination of HDMs and RW pollen extracts in correlation with high-fructose diet (HFrD) by in vitro tracheal reactivity analysis in isolated organ bath and biological explorations. Our findings unveiled interrelated connections between allergic asthma, dyslipidemia, and HFrD-induced obesity, shedding light on their compounding role through inflammation. The increased CRP values and airway hyperresponsiveness to the methacholine challenge suggest a synergistic effect of obesity on amplifying the existing inflammation induced by asthma. One of the major outcomes is that the co-sensitization to HDMs and RW pollen led to the development of a severe allergic asthma phenotype in rats, especially in those with HFrD. Therefore, the co-sensitization to these allergens as well as the HFrD may play a crucial role in the modulation of systemic inflammation, obesity, and airway reactivity.
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Affiliation(s)
- Răzvan-Ionuț Zimbru
- Center of Immuno-Physiology and Biotechnologies, Department of Functional Sciences, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (R.-I.Z.); (E.-L.Z.); (V.-L.O.); (F.-M.B.); (D.C.); (G.T.); (M.G.); (V.P.); (C.P.)
- OncoGen Center, Pius Brinzeu County Clinical Emergency Hospital, 300723 Timisoara, Romania
| | - Elena-Larisa Zimbru
- Center of Immuno-Physiology and Biotechnologies, Department of Functional Sciences, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (R.-I.Z.); (E.-L.Z.); (V.-L.O.); (F.-M.B.); (D.C.); (G.T.); (M.G.); (V.P.); (C.P.)
- OncoGen Center, Pius Brinzeu County Clinical Emergency Hospital, 300723 Timisoara, Romania
| | - Valentin-Laurențiu Ordodi
- Center of Immuno-Physiology and Biotechnologies, Department of Functional Sciences, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (R.-I.Z.); (E.-L.Z.); (V.-L.O.); (F.-M.B.); (D.C.); (G.T.); (M.G.); (V.P.); (C.P.)
- OncoGen Center, Pius Brinzeu County Clinical Emergency Hospital, 300723 Timisoara, Romania
- Chemistry and Engineering of Organic and Natural Compounds Department, University Politehnica Timisoara, 300006 Timisoara, Romania
| | - Florina-Maria Bojin
- Center of Immuno-Physiology and Biotechnologies, Department of Functional Sciences, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (R.-I.Z.); (E.-L.Z.); (V.-L.O.); (F.-M.B.); (D.C.); (G.T.); (M.G.); (V.P.); (C.P.)
- OncoGen Center, Pius Brinzeu County Clinical Emergency Hospital, 300723 Timisoara, Romania
| | - Daniela Crîsnic
- Center of Immuno-Physiology and Biotechnologies, Department of Functional Sciences, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (R.-I.Z.); (E.-L.Z.); (V.-L.O.); (F.-M.B.); (D.C.); (G.T.); (M.G.); (V.P.); (C.P.)
- OncoGen Center, Pius Brinzeu County Clinical Emergency Hospital, 300723 Timisoara, Romania
| | - Manuela Grijincu
- Center of Immuno-Physiology and Biotechnologies, Department of Functional Sciences, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (R.-I.Z.); (E.-L.Z.); (V.-L.O.); (F.-M.B.); (D.C.); (G.T.); (M.G.); (V.P.); (C.P.)
- OncoGen Center, Pius Brinzeu County Clinical Emergency Hospital, 300723 Timisoara, Romania
| | - Silvia-Nicoleta Mirica
- Faculty of Sport and Physical Education, West University of Timisoara, 300223 Timisoara, Romania;
| | - Gabriela Tănasie
- Center of Immuno-Physiology and Biotechnologies, Department of Functional Sciences, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (R.-I.Z.); (E.-L.Z.); (V.-L.O.); (F.-M.B.); (D.C.); (G.T.); (M.G.); (V.P.); (C.P.)
- OncoGen Center, Pius Brinzeu County Clinical Emergency Hospital, 300723 Timisoara, Romania
| | - Marius Georgescu
- Center of Immuno-Physiology and Biotechnologies, Department of Functional Sciences, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (R.-I.Z.); (E.-L.Z.); (V.-L.O.); (F.-M.B.); (D.C.); (G.T.); (M.G.); (V.P.); (C.P.)
| | - Ioan Huțu
- Horia Cernescu Research Unit, Faculty of Veterinary Medicine, University of Life Sciences “King Michael I of Romania”, 300645 Timișoara, Romania;
| | - Laura Haidar
- Center of Immuno-Physiology and Biotechnologies, Department of Functional Sciences, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (R.-I.Z.); (E.-L.Z.); (V.-L.O.); (F.-M.B.); (D.C.); (G.T.); (M.G.); (V.P.); (C.P.)
| | - Virgil Păunescu
- Center of Immuno-Physiology and Biotechnologies, Department of Functional Sciences, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (R.-I.Z.); (E.-L.Z.); (V.-L.O.); (F.-M.B.); (D.C.); (G.T.); (M.G.); (V.P.); (C.P.)
- OncoGen Center, Pius Brinzeu County Clinical Emergency Hospital, 300723 Timisoara, Romania
| | - Carmen Panaitescu
- Center of Immuno-Physiology and Biotechnologies, Department of Functional Sciences, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (R.-I.Z.); (E.-L.Z.); (V.-L.O.); (F.-M.B.); (D.C.); (G.T.); (M.G.); (V.P.); (C.P.)
- OncoGen Center, Pius Brinzeu County Clinical Emergency Hospital, 300723 Timisoara, Romania
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Cacheiro-Llaguno C, Mösges R, Calzada D, González-de la Fuente S, Quintero E, Carnés J. Polysensitisation is associated with more severe symptoms: The reality of patients with allergy. Clin Exp Allergy 2024; 54:607-620. [PMID: 38676405 DOI: 10.1111/cea.14486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 04/03/2024] [Accepted: 04/12/2024] [Indexed: 04/28/2024]
Abstract
BACKGROUND Studying the sensitisation profiles of patients with allergies allows for a deeper understanding of the disease which may facilitate the selection of the best-personalised allergen immunotherapy. This observational, cross-sectional, multicentre study aimed to demonstrate the heterogeneity of the German population with allergies by analysing specific immunoglobulin E (sIgE) patterns towards aeroallergens and exploring the relationship between sensitisation and clinical symptoms. METHODS In total, 500 patients with allergies from different regions of Germany were recruited based on their case histories, clinical allergic symptoms and skin prick test data for aeroallergens. Serum samples were analysed using ImmunoCAP assays to determine sIgE levels for 33 allergenic sources and 43 molecular allergens. RESULTS Most patients (81%) were polysensitised. Betula verrucosa pollen was the most common cause of sensitisation (59%), followed by Phleum pratense (58%) and Dermatophagoides pteronyssinus (44%). The highest prevalence rates of molecular allergens were observed for Bet v 1 (84%) from birch pollen, Phl p 1 from grass pollen (82%), Der p 2 (69%) from mites and Fel d 1 (69%) from cat. Polysensitisation was significantly associated with the presence of asthma and the severity of rhinitis symptoms. CONCLUSIONS Our findings show a high rate of polysensitisation and emphasise the importance of molecular diagnosis for more precise and comprehensive insights into sensitisation patterns and their association with clinical symptoms. These data may help improve personalised diagnosis and immunotherapy adapted to the needs of individual patients in the region.
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Affiliation(s)
| | - Ralph Mösges
- IMSB, Faculty of Medicine, University of Cologne, Cologne, Germany
- ClinCompetence Cologne GmbH, Cologne, Germany
| | - David Calzada
- R&D Allergy and Immunology Unit, LETI Pharma, Madrid, Spain
| | | | - Eliana Quintero
- IMSB, Faculty of Medicine, University of Cologne, Cologne, Germany
- Praxis Dr. Kasche und Kollegen, Hamburg, Germany
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Qin QZ, Tang J, Wang CY, Xu ZQ, Tian M. Construction by artificial intelligence and immunovalidation of hypoallergenic mite allergen Der f 36 vaccine. Front Immunol 2024; 15:1325998. [PMID: 38601166 PMCID: PMC11004385 DOI: 10.3389/fimmu.2024.1325998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Accepted: 03/12/2024] [Indexed: 04/12/2024] Open
Abstract
Background The house dust mite (HDM) is widely recognized as the most prevalent allergen in allergic diseases. Allergen-specific immunotherapy (AIT) has been successfully implemented in clinical treatment for HDM. Hypoallergenic B-cell epitope-based vaccine designed by artificial intelligence (AI) represents a significant progression of recombinant hypoallergenic allergen derivatives. Method The three-dimensional protein structure of Der f 36 was constructed using Alphafold2. AI-based tools were employed to predict B-cell epitopes, which were subsequently verified through IgE-reaction testing. Hypoallergenic Der f 36 was then synthesized, expressed, and purified. The reduced allergenicity was assessed by enzyme-linked immunosorbent assay (ELISA), immunoblotting, and basophil activation test. T-cell response to hypoallergenic Der f 36 and Der f 36 was evaluated based on cytokine expression in the peripheral blood mononuclear cells (PBMCs) of patients. The immunogenicity was evaluated and compared through rabbit immunization with hypoallergenic Der f 36 and Der f 36, respectively. The inhibitory effect of the blocking IgG antibody on the specific IgE-binding activity and basophil activation of Der f 36 allergen was also examined. Results The final selected non-allergic B-cell epitopes were 25-48, 57-67, 107-112, 142-151, and 176-184. Hypoallergenic Der f 36 showed significant reduction in IgE-binding activity. The competitive inhibition of IgE-binding to Der f 36 was investigated using the hypoallergenic Der f 36, and only 20% inhibition could be achieved, which is greatly reduced when compared with inhibition by Der f 36 (98%). The hypoallergenic Der f 36 exhibited a low basophil-stimulating ratio similar to that of the negative control, and it could induce an increasing level of IFN-γ but not Th2 cytokines IL-5 and IL-13 in PBMCs. The vaccine-specific rabbit blocking IgG antibodies could inhibit the patients' IgE binding and basophil stimulation activity of Derf 36. Conclusion This study represents the first application of an AI strategy to facilitate the development of a B-cell epitope-based hypoallergenic Der f 36 vaccine, which may become a promising immunotherapy for HDM-allergic patients due to its reduced allergenicity and its high immunogenicity in inducing blocking of IgG.
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Affiliation(s)
- Qiao-Zhi Qin
- Department of Respiratory Medicine, Children’s Hospital of Nanjing Medical University, Nanjing, China
- Pediatric Department, Northern Jiangsu People’s Hospital, Yangzhou, China
| | - Jian Tang
- Department of Pharmacy, The Affiliated Cancer Hospital of Nanjing Medical University and Jiangsu Cancer Hospital and Jiangsu Institute of Cancer Research, Nanjing, China
| | - Cai-Yun Wang
- Department of Respiratory Medicine, Children’s Hospital of Nanjing Medical University, Nanjing, China
| | - Zhi-Qiang Xu
- Research Division of Clinical Pharmacology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
- National Vaccine Innovation Platform, Nanjing Medical University, Nanjing, China
| | - Man Tian
- Department of Respiratory Medicine, Children’s Hospital of Nanjing Medical University, Nanjing, China
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Linn C, O’Malley A, Khatri K, Wright EM, Sebagh D, Grbić M, Kowal K, Chruszcz M. Microscopic Menaces: The Impact of Mites on Human Health. Int J Mol Sci 2024; 25:3675. [PMID: 38612486 PMCID: PMC11011512 DOI: 10.3390/ijms25073675] [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: 01/30/2024] [Revised: 03/20/2024] [Accepted: 03/21/2024] [Indexed: 04/14/2024] Open
Abstract
Mites are highly prevalent arthropods that infest diverse ecological niches globally. Approximately 55,000 species of mites have been identified but many more are yet to be discovered. Of the ones we do know about, most go unnoticed by humans and animals. However, there are several species from the Acariformes superorder that exert a significant impact on global human health. House dust mites are a major source of inhaled allergens, affecting 10-20% of the world's population; storage mites also cause a significant allergy in susceptible individuals; chiggers are the sole vectors for the bacterium that causes scrub typhus; Demodex mites are part of the normal microfauna of humans and their pets, but under certain conditions populations grow out of control and affect the integrity of the integumentary system; and scabies mites cause one of the most common dermatological diseases worldwide. On the other hand, recent genome sequences of mites provide novel tools for mite control and the development of new biomaterial with applications in biomedicine. Despite the palpable disease burden, mites remain understudied in parasitological research. By better understanding mite biology and disease processes, researchers can identify new ways to diagnose, manage, and prevent common mite-induced afflictions. This knowledge can lead to improved clinical outcomes and reduced disease burden from these remarkably widespread yet understudied creatures.
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Affiliation(s)
- Christina Linn
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI 48824, USA; (C.L.); (A.O.); (K.K.); (E.M.W.); (D.S.)
| | - Andrea O’Malley
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI 48824, USA; (C.L.); (A.O.); (K.K.); (E.M.W.); (D.S.)
| | - Kriti Khatri
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI 48824, USA; (C.L.); (A.O.); (K.K.); (E.M.W.); (D.S.)
| | - Elaine M. Wright
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI 48824, USA; (C.L.); (A.O.); (K.K.); (E.M.W.); (D.S.)
| | - Dylan Sebagh
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI 48824, USA; (C.L.); (A.O.); (K.K.); (E.M.W.); (D.S.)
| | - Miodrag Grbić
- Department of Biology, University of Western Ontario, London, ON N6A 5B7, Canada;
| | - Krzysztof Kowal
- Department of Allergology and Internal Medicine, Medical University of Bialystok, 15-276 Bialystok, Poland;
- Department of Experimental Allergology and Immunology, Medical University of Bialystok, 15-276 Bialystok, Poland
| | - Maksymilian Chruszcz
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI 48824, USA; (C.L.); (A.O.); (K.K.); (E.M.W.); (D.S.)
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Tuten Dal S, Sahiner UM, Soyer O, Sekerel BE. Mite allergen sensitization patterns in Turkish children: Age-related changes and molecular correlations. Pediatr Allergy Immunol 2024; 35:e14093. [PMID: 38376849 DOI: 10.1111/pai.14093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 01/31/2024] [Accepted: 02/05/2024] [Indexed: 02/21/2024]
Abstract
BACKGROUND Mites are ubiquitous aeroallergens found worldwide. Elucidating individual mite allergen sensitization patterns provides critical insights for managing allergic diseases. This study aimed to investigate molecular allergen (MA) sensitization patterns across different age groups and explore cluster relationships among mite-sensitized children. METHODS We analyzed 76 children who exhibited sensitization to at least one of the 17 distinct mite MAs through microarray testing. RESULTS Dermatophagoides farinae exhibited a slightly higher prevalence of sensitization compared with Dermatophagoides pteronyssinus. Der p 1/2 and Der f 1/2 demonstrated an almost 40% sensitization rate, while Der p 10/Blo t 10, Der p 20, Der p 23, and Gly d 2/Lep d 2 displayed an approximately 20% sensitization rate. Sensitization levels and ratios increased significantly with age for Der p 23 but showed numerical rises for other MAs, except for Der p 10/Blo t 10. The presence of various types of atopic diseases had only a minimal impact on sensitization profiles. Strong correlations emerged between Der f 2 and Der p 2, Der p 10 and Blo t 10, Der p 21 and Blo t 5, as well as Gly d 2 and Lep d 2. Hierarchical cluster analysis substantiated these relationships. Der p 10 and its homolog Blo t 10-sensitive patients (15/76) were mostly seen as mono sensitization(12/15). Ten patients exhibited monosensitization to Der p 20, suggesting a possible association with scabies infection. CONCLUSION In children, mite sensitization diversity and levels increased with age. The presence of significant correlations/cluster relationships among these sensitizations underscores homologies among specific MAs.
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Affiliation(s)
- Sevda Tuten Dal
- Department of Pediatric Allergy, Hacettepe University School of Medicine, Ankara, Turkey
| | - Umit Murat Sahiner
- Department of Pediatric Allergy, Hacettepe University School of Medicine, Ankara, Turkey
| | - Ozge Soyer
- Department of Pediatric Allergy, Hacettepe University School of Medicine, Ankara, Turkey
| | - Bulent Enis Sekerel
- Department of Pediatric Allergy, Hacettepe University School of Medicine, Ankara, Turkey
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8
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Biliute G, Miskinyte M, Miskiniene A, Zinkeviciene A, Kvedariene V. Sensitization profiles to house dust mite Dermatophagoides pteronyssinus molecular allergens in the Lithuanian population: Understanding allergic sensitization patterns. Clin Transl Allergy 2024; 14:e12332. [PMID: 38282198 PMCID: PMC10807355 DOI: 10.1002/clt2.12332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 12/11/2023] [Accepted: 12/29/2023] [Indexed: 01/30/2024] Open
Abstract
BACKGROUND House dust mite (HDM) allergy is a prevalent global health concern, with varying sensitization profiles observed across populations. We aimed to provide a comprehensive assessment of molecular allergen sensitization patterns in the Lithuanian population, with a focus on Dermatophagoides pteronyssinus (Der p), and investigate patterns of concomitant reactivity among different allergens to enhance the accuracy of HDM allergy diagnostics. METHODS A comprehensive analysis of 1520 patient test results in Lithuania from 2020 to 2022 was performed. Sensitization patterns to major (Der p 1, Der p 2, and Der p 23) and minor (Der p 5, Der p 7, and Der p 21) Der p allergen components were described using molecular-based diagnostics. Additionally, we investigated sensitization to allergen components from other allergen sources, including tropomyosins (Der p 10, Per a 7, Pen m 1, Ani s 3, Blo t 10) and arginine kinases (Pen m 2, Bla g 9, Der p 20). RESULTS This study reveals a high prevalence of HDM sensitization in Lithuania - 481 individuals (45.38% of the sensitized group) exhibited sensitization to at least one Der p allergen component. Importantly, within the sensitized group, 37.21% of patients were sensitized to Der p 5, Der p 7, or Der p 21 in addition to major allergenic components. Distinct sensitization patterns were observed across different age groups, indicating the influence of age-related factors. Furthermore, we confirmed cross-reactivity between Der p 5 and Blo t 5 as well as between Der p 21 and Blo t 21, emphasizing the clinical relevance of these associations. We also highlighted the complexity of sensitization patterns among tropomyosins and arginine kinases. CONCLUSION This study provides valuable insights into HDM allergy sensitization profiles in Lithuania, emphasizing the importance of considering major and minor HDM allergen components for accurate diagnosis and management of HDM-related allergic diseases. Differences between populations and age-related factors impact sensitization patterns. Understanding concomitant reactivity among allergens, such as Der p 5 and Blo t 5, Der p 21 and Blo t 21, tropomyosins, and arginine kinases, is crucial for improving diagnostic strategies and developing targeted interventions for allergic individuals.
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Affiliation(s)
- Gabija Biliute
- Faculty of MedicineClinic of Chest DiseasesAllergology and ImmunologyInstitute of Clinical MedicineVilnius UniversityVilniusLithuania
| | | | | | - Aukse Zinkeviciene
- State Research Institute Centre for Innovative MedicineDepartment of ImmunologyVilnius UniversityVilniusLithuania
| | - Violeta Kvedariene
- Faculty of MedicineClinic of Chest DiseasesAllergology and ImmunologyInstitute of Clinical MedicineVilnius UniversityVilniusLithuania
- Department of PathologyFaculty of MedicineInstitute of Biomedical SciencesVilnius UniversityVilniusLithuania
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9
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Hubert J, Vrtala S, Sopko B, Dowd SE, He Q, Klimov PB, Harant K, Talacko P, Erban T. Predicting Blomia tropicalis allergens using a multiomics approach. Clin Transl Allergy 2023; 13:e12302. [PMID: 37876035 PMCID: PMC10542617 DOI: 10.1002/clt2.12302] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 08/01/2023] [Accepted: 09/07/2023] [Indexed: 10/26/2023] Open
Abstract
BACKGROUND The domestic mite Blomia tropicalis is a major source of allergens in tropical and subtropical regions. Despite its great medical importance, the allergome of this mite has not been sufficiently studied. Only 14 allergen groups have been identified in B. tropicalis thus far, even though early radioimmunoelectrophoresis techniques (27 uncharacterized allergen complexes) and comparative data based on 40 allergen groups officially recognized by the World Health Organization (WHO)/IUIS in domestic astigmatid mites suggest the presence of a large set of additional allergens. METHODS Here, we employ a multiomics approach to assess the allergome of B. tropicalis using genomic and transcriptomic sequence data and perform highly sensitive protein abundance quantification. FINDINGS Among the 14 known allergen groups, we confirmed 13 (one WHO/IUIS allergen, Blo t 19, was not found) and identified 16 potentially novel allergens based on sequence similarity. These data indicate that B. tropicalis shares 27 known/deduced allergen groups with pyroglyphid house dust mites (genus Dermatophagoides). Among these groups, five allergen-encoding genes are highly expressed at the transcript level: Blo t 1, Blo t 5, Blo t 21 (known), Blo t 15, and Blo t 18 (predicted). However, at the protein level, a different set of most abundant allergens was found: Blo t 2, 10, 11, 20 and 21 (mite bodies) or Blo t 3, 4, 6 and predicted Blo t 13, 14 and 36 (mite feces). INTERPRETATION We report the use of an integrated omics method to identify and predict an array of mite allergens and advanced, label-free proteomics to determine allergen protein abundance. Our research identifies a large set of novel putative allergens and shows that the expression levels of allergen-encoding genes may not be strictly correlated with the actual allergenic protein abundance in mite bodies.
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Affiliation(s)
- Jan Hubert
- Crop Research InstitutePragueCzechia
- Department of Microbiology, Nutrition and DieteticsFaculty of Agrobiology, Food and Natural ResourcesCzech University of Life Sciences PraguePragueCzechia
| | - Susanne Vrtala
- Department of Pathophysiology and Allergy ResearchCenter for Pathophysiology, Infectiology and ImmunologyMedical University of ViennaViennaAustria
| | | | - Scot E. Dowd
- MR DNA (Molecular Research LP)ShallowaterTexasUSA
| | - Qixin He
- Purdue UniversityLilly Hall of Life SciencesWest LafayetteIndianaUSA
| | - Pavel B. Klimov
- Purdue UniversityLilly Hall of Life SciencesWest LafayetteIndianaUSA
| | - Karel Harant
- Proteomics Core FacilityFaculty of ScienceCharles UniversityBIOCEVVestecCzechia
- Institute for Environmental StudiesFaculty of ScienceCharles UniversityPragueCzechia
| | - Pavel Talacko
- Proteomics Core FacilityFaculty of ScienceCharles UniversityBIOCEVVestecCzechia
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10
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Meloun A, León B. Sensing of protease activity as a triggering mechanism of Th2 cell immunity and allergic disease. FRONTIERS IN ALLERGY 2023; 4:1265049. [PMID: 37810200 PMCID: PMC10552645 DOI: 10.3389/falgy.2023.1265049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 09/12/2023] [Indexed: 10/10/2023] Open
Abstract
CD4 T-helper cell type 2 (Th2) cells mediate host defense against extracellular parasites, like helminths. However, Th2 cells also play a pivotal role in the onset and progression of allergic inflammatory diseases such as atopic dermatitis, allergic rhinitis, asthma, and food allergy. This happens when allergens, which are otherwise harmless foreign proteins, are mistakenly identified as "pathogenic." Consequently, the encounter with these allergens triggers the activation of specific Th2 cell responses, leading to the development of allergic reactions. Understanding the molecular basis of allergen sensing is vital for comprehending how Th2 cell responses are erroneously initiated in individuals with allergies. The presence of protease activity in allergens, such as house dust mites (HDM), pollen, fungi, or cockroaches, has been found to play a significant role in triggering robust Th2 cell responses. In this review, we aim to examine the significance of protease activity sensing in foreign proteins for the initiation of Th2 cell responses, highlighting how evolving a host protease sensor may contribute to detect invading helminth parasites, but conversely can also trigger unwanted reactions to protease allergens. In this context, we will explore the recognition receptors activated by proteolytic enzymes present in major allergens and their contribution to Th2-mediated allergic responses. Furthermore, we will discuss the coordinated efforts of sensory neurons and epithelial cells in detecting protease allergens, the subsequent activation of intermediary cells, including mast cells and type 2 innate lymphoid cells (ILC2s), and the ultimate integration of all signals by conventional dendritic cells (cDCs), leading to the induction of Th2 cell responses. On the other hand, the review highlights the role of monocytes in the context of protease allergen exposure and their interaction with cDCs to mitigate undesirable Th2 cell reactions. This review aims to provide insights into the innate functions and cell communications triggered by protease allergens, which can contribute to the initiation of detrimental Th2 cell responses, but also promote mechanisms to effectively suppress their development.
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Affiliation(s)
| | - Beatriz León
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL, United States
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11
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Busold S, Akkerdaas JH, Zijlstra-Willems EM, van der Graaf K, Tas SW, de Jong EC, van Ree R, Geijtenbeek TBH. Toll-like receptor 4 and Syk kinase shape dendritic cell-induced immune activation to major house dust mite allergens. Front Med (Lausanne) 2023; 10:1105538. [PMID: 37614946 PMCID: PMC10442820 DOI: 10.3389/fmed.2023.1105538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 07/20/2023] [Indexed: 08/25/2023] Open
Abstract
Background House dust mite (HDM) is a major cause of respiratory allergic diseases. Dendritic cells (DCs) play a central role in orchestrating adaptive allergic immune responses. However, it remains unclear how DCs become activated by HDM. Biochemical functions of the major HDM allergens Der p 1 (cysteine protease) and Der p 2 (MD2-mimick) have been implicated to contribute to DC activation. Methods We investigated the immune activating potential of HDM extract and its major allergens Der p 1 and Der p 2 using monocyte-derived DCs (moDCs). Maturation and activation markers were monitored by flow cytometry and cytokine production by ELISA. Allergen depletion and proteinase K digestion were used to investigate the involvement of proteins, and in particular of the major allergens. Inhibitors of spleen tyrosine kinase (Syk), Toll-like receptor 4 (TLR4) and of C-type lectin receptors (CLRs) were used to identify the involved receptors. The contribution of endotoxins in moDC activation was assessed by their removal from HDM extract. Results HDM extract induced DC maturation and cytokine responses in contrast to the natural purified major allergens Der p 1 and Der p 2. Proteinase K digestion and removal of Der p 1 or Der p 2 did not alter the immune stimulatory capacity of HDM extract. Antibodies against the CLRs Dectin-1, Dectin-2, and DC-SIGN did not affect cytokine responses. In contrast, Syk inhibition partially reduced IL-6, IL-12 and completely blocked IL-10. Blocking TLR4 signaling reduced the HDM-induced IL-10 and IL-12p70 induction, but not IL-6, while endotoxin removal potently abolished the induced cytokine response. Conclusion Our data strongly suggest that HDM-induced DC activation is neither dependent on Der p 1 nor Der p 2, but depend on Syk and TLR4 activation, which might suggest a crosstalk between Syk and TLR4 pathways. Our data highlight that endotoxins play a potent role in immune responses targeting HDM.
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Affiliation(s)
- Stefanie Busold
- Amsterdam University Medical Centers, location AMC, Department of Experimental Immunology, Amsterdam, Netherlands
- Amsterdam Institute for Infection and Immunity, Inflammatory Diseases, Amsterdam, Netherlands
| | - Jaap H. Akkerdaas
- Amsterdam University Medical Centers, location AMC, Department of Experimental Immunology, Amsterdam, Netherlands
- Amsterdam Institute for Infection and Immunity, Inflammatory Diseases, Amsterdam, Netherlands
| | - Esther M. Zijlstra-Willems
- Amsterdam University Medical Centers, location AMC, Department of Experimental Immunology, Amsterdam, Netherlands
- Amsterdam Institute for Infection and Immunity, Inflammatory Diseases, Amsterdam, Netherlands
| | | | - Sander W. Tas
- Amsterdam University Medical Centers, location AMC, Department of Experimental Immunology, Amsterdam, Netherlands
- Amsterdam Institute for Infection and Immunity, Inflammatory Diseases, Amsterdam, Netherlands
- Amsterdam Rheumatology and Immunology Center, Department of Rheumatology and Clinical Immunology, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, Netherlands
| | - Esther C. de Jong
- Amsterdam University Medical Centers, location AMC, Department of Experimental Immunology, Amsterdam, Netherlands
- Amsterdam Institute for Infection and Immunity, Inflammatory Diseases, Amsterdam, Netherlands
| | - Ronald van Ree
- Amsterdam University Medical Centers, location AMC, Department of Experimental Immunology, Amsterdam, Netherlands
- Amsterdam Institute for Infection and Immunity, Inflammatory Diseases, Amsterdam, Netherlands
- Amsterdam University Medical Centers, location AMC, Department of Otorhinolaryngology, Amsterdam, Netherlands
| | - Teunis B. H. Geijtenbeek
- Amsterdam University Medical Centers, location AMC, Department of Experimental Immunology, Amsterdam, Netherlands
- Amsterdam Institute for Infection and Immunity, Inflammatory Diseases, Amsterdam, Netherlands
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12
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Cai ZL, Liu S, Li WY, Zhou ZW, Hu WZ, Chen JJ, Ji K. Identification of an immunodominant IgE epitope of Der f 40, a novel allergen of Dermatophagoides farinae. World Allergy Organ J 2023; 16:100804. [PMID: 37577028 PMCID: PMC10415791 DOI: 10.1016/j.waojou.2023.100804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 06/02/2023] [Accepted: 07/19/2023] [Indexed: 08/15/2023] Open
Abstract
Background House dust mites (HDMs), including Dermatophagoides pteronyssinus (Der p) and Dermatophagoides farinae (Der f) species, represent a major source of inhalant allergens that induce IgE-mediated anaphylactic reactions. HDM allergen identification is important to the diagnosis and treatment of allergic diseases. Here, we report the identification of a novel HDM allergen, which we suggest naming Der f 40, and its immunodominant IgE epitopes. Methods The recombinant protein Der f 40 was expressed using a pET prokaryotic expression system and purified with Ni-NTA resins. IgE binding activity was evaluated by IgE-western blot, dot-blot, and ELISA. Mast cell activation testing was performed to assess the cellular effects of IgE binding in mouse bone marrow derived mast cells (BMMCs) expressing human FcεRI. IgE binding assays were performed with truncated and hybrid Der f 40 protein molecules to find immunodominant IgE epitopes. Results A 106-amino acid (aa) recombinant Der f Group 40 protein (rDer f 40) was obtained (GenBank accession No. XP_046915420.1) as thiredoxin-like protein. Der f 40 was shown to bind IgE from HDM allergic serum in vitro (9.68%; 12/124 in IgE-ELISA), and shown to promote the release of β-hexosaminidase from BMMCs dose-dependently when administered with HDM allergic sera. The Der f Group 40 protein was named Der f 40 and listed in the World Health Organization and International Union of Immunological Societies (WHO/IUIS) Allergen Nomenclature Sub-committee. IgE binding assays with Der f 40-based truncated and hybrid proteins indicated that IgE binding epitopes are likely located in the C-terminal region and dependent on conformational structure. The 76-106-aa region of C-terminus was identified as an immunodominant IgE epitope of Der f 40. Conclusion A novel HDM allergen with robust IgE binding activity was identified and named Der f 40. An immunodominant IgE epitope of Der f 40 with conformational dependency was identified in the C-terminus (aa 76-106). These findings provide new information that may be useful in the development of diagnostic and therapeutic agents for HDM allergy.
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Affiliation(s)
- Ze-Lang Cai
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Shenzhen University Medical School, Shenzhen 518060, China
| | - Shan Liu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Shenzhen University Medical School, Shenzhen 518060, China
| | - Wei-Yong Li
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Shenzhen University Medical School, Shenzhen 518060, China
| | - Zi-Wen Zhou
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Shenzhen University Medical School, Shenzhen 518060, China
| | - Wan-Zhen Hu
- Shenzhen University General Hospital, Shenzhen 518060, China
| | - Jia-Jie Chen
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Shenzhen University Medical School, Shenzhen 518060, China
| | - Kunmei Ji
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Shenzhen University Medical School, Shenzhen 518060, China
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13
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González-Pérez R, Poza-Guedes P, Pineda F, Galán T, Mederos-Luis E, Abel-Fernández E, Martínez MJ, Sánchez-Machín I. Molecular Mapping of Allergen Exposome among Different Atopic Phenotypes. Int J Mol Sci 2023; 24:10467. [PMID: 37445644 DOI: 10.3390/ijms241310467] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 06/18/2023] [Accepted: 06/20/2023] [Indexed: 07/15/2023] Open
Abstract
Climate change and exposure to environmental pollutants play a key role in the onset and aggravation of allergic diseases. As different climate-dependent patterns of molecular immunoglobulin E (IgE) reactivity have been regionally described, we sought to investigate the evolving allergen exposome in distinctive allergic phenotypes and subtropical weather conditions through a Precision Allergy Molecular Diagnosis (PAMD@) model. Concurrent sensitization to several house dust mites (HDM) and storage mite molecules were broadly dominant in the investigated cohort, followed by the major cat allergen Fel d 1, and regardless of the basal allergic disease. Although a complex repertoire of allergens was recognized, a steadily increasing number of IgE binding molecules was associated with the complexity of the underlying atopic disease. Besides the highly prevalent IgE responses to major HDM allergens, Der p 21, Der p 5, and Der p 7 also showed up as serodominant molecules, especially in subjects bothered by asthma and atopic dermatitis. The accurate characterization of the external exposome at the molecular level and their putative role as clinically relevant allergens is essential to elucidate the phenotypic diversity of atopic disease in terms of personalized diagnosis and therapy.
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Affiliation(s)
- Ruperto González-Pérez
- Allergy Department, Hospital Universitario de Canarias, 38320 Tenerife, Spain
- Severe Asthma Unit, Hospital Universitario de Canarias, 38320 Tenerife, Spain
| | - Paloma Poza-Guedes
- Allergy Department, Hospital Universitario de Canarias, 38320 Tenerife, Spain
- Severe Asthma Unit, Hospital Universitario de Canarias, 38320 Tenerife, Spain
| | | | - Tania Galán
- Inmunotek SL Laboratories, 28805 Madrid, Spain
| | - Elena Mederos-Luis
- Allergy Department, Hospital Universitario de Canarias, 38320 Tenerife, Spain
| | | | | | - Inmaculada Sánchez-Machín
- Allergy Department, Hospital Universitario de Canarias, 38320 Tenerife, Spain
- Allergen Immunotherapy Unit, Hospital Universitario de Canarias, 38320 Tenerife, Spain
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14
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Huang HJ, Sarzsinszky E, Vrtala S. House dust mite allergy: The importance of house dust mite allergens for diagnosis and immunotherapy. Mol Immunol 2023; 158:54-67. [PMID: 37119758 DOI: 10.1016/j.molimm.2023.04.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 04/11/2023] [Accepted: 04/14/2023] [Indexed: 05/01/2023]
Abstract
House dust mite (HDM) allergy belongs to the most important allergies and affects approximately 65-130 million people worldwide. Additionally, untreated HDM allergy may lead to the development of severe disease manifestations such as atopic dermatitis or asthma. Diagnosis and immunotherapy of HDM allergic patients are well established but are often hampered by the use of mite extracts that are of bad quality and lack important allergens. The use of individual allergens seems to be a promising alternative to natural allergen extracts, since they represent well-defined components that can easily be produced and quantified. However, a thorough characterization of the individual allergens is required to determine their clinical relevance and to identify those allergens that are required for correct diagnosis of HDM allergy and for successful immunotherapy. This review gives an update on the individual HDM allergens and their benefits for diagnosis and immunotherapy of HDM allergic patients.
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Affiliation(s)
- Huey-Jy Huang
- Division of Immunopathology, Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Eszter Sarzsinszky
- Division of Immunopathology, Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Susanne Vrtala
- Division of Immunopathology, Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria.
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15
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Current advances in house dust mite allergen immunotherapy (AIT): Routes of administration, biomarkers and molecular allergen profiling. Mol Immunol 2023; 155:124-134. [PMID: 36806944 DOI: 10.1016/j.molimm.2023.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 01/31/2023] [Accepted: 02/07/2023] [Indexed: 02/18/2023]
Abstract
Allergy to house dust mites (HDM) is a perennial respiratory disease that affect more than half a billion people worldwide. Dermatophagoides pteronyssinus and D. farinae, two HDM species, are major sources of indoor allergens triggering allergic inflammation. Although symptomatic drugs are widely used to block the allergic reaction, allergen immunotherapy is the only curative treatment of IgE-mediated type I respiratory allergies. In this article, we review recent advances in various routes of allergen immunotherapy. We particularly focus on subcutaneous (SCIT) and sublingual (SLIT) immunotherapy, used as a reference therapy since they have transformed allergic treatments by improving symptoms (asthma and rhinitis) as well as the quality of life of patients. We also highlight recent data in more exploratory routes (i.e., oral, intralymphatic, epicutaneous and intradermal) and discuss respective advantages of various route, as well as their foreseen modes of action. Finally, we provide an update on biomarkers as well as on the relevance of the molecular profiling of allergic individuals related to treatment efficacy or asthma prediction.
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16
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Walsemann T, Böttger M, Traidl S, Schwager C, Gülsen A, Freimooser S, Roesner LM, Werfel T, Jappe U. Specific IgE against the house dust mite allergens Der p 5, 20 and 21 influences the phenotype and severity of atopic diseases. Allergy 2023; 78:731-742. [PMID: 36239002 DOI: 10.1111/all.15553] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 09/12/2022] [Accepted: 09/23/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND House dust mites (HDM) are among the most important sources for airborne allergens with high relevance for atopic diseases. Routine tests contain only 4 of 32 registered allergens of Dermatophagoides pteronyssinus. Clinical relevance and pathomechanistic properties of many allergens are not well understood. OBJECTIVE The association of several HDM allergens with allergic rhinitis, allergic asthma, and atopic dermatitis was investigated to identify allergens with biomarker potential and to transfer them into diagnostics. METHODS Eight out of nine D. pteronyssinus allergens (nDer p 1, rDer p 2, rDer p 5, rDer p 7, rDer p 10, rDer p 13, rDer p 20, rDer p 21, rDer p 23) were recombinantly expressed and purified. Sensitization patterns of 384 HDM-allergic individuals exhibiting different clinical phenotypes were analyzed with a serum-saving multiplex array. RESULTS Sensitization to more than three mite allergens (sensitization count) was associated with allergic asthma and/or atopic dermatitis. Reactions to Der p 5 and Der p 21 were more frequent in allergic asthma compared to allergic rhinitis. Atopic dermatitis patients were more often sensitized to Der p 5, Der p 20, and Der p 21 among others. Der p 20-IgE > 80 kU/L was associated with severe atopic dermatitis in 75% of patients. CONCLUSION This study demonstrates the clinical importance of the sensitization count and of certain allergens (Der p 5, Der p 20, and Der p 21) not available for routine diagnostics yet. Implementing them as well as the sensitization count in diagnostic measures will improve diagnosis and risk assessment of HDM-allergic patients.
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Affiliation(s)
- Theresa Walsemann
- Division of Clinical and Molecular Allergology, Priority Area Asthma and Allergy, Research Center Borstel, German Center for Lung Research (DZL) Airway Research Center North (ARCN), Borstel, Germany
| | - Marisa Böttger
- Division of Clinical and Molecular Allergology, Priority Area Asthma and Allergy, Research Center Borstel, German Center for Lung Research (DZL) Airway Research Center North (ARCN), Borstel, Germany
| | - Stephan Traidl
- Division of Immunodermatology and Allergy Research, Department of Dermatology and Allergy, Hannover Medical School, Hannover, Germany
| | - Christian Schwager
- Division of Clinical and Molecular Allergology, Priority Area Asthma and Allergy, Research Center Borstel, German Center for Lung Research (DZL) Airway Research Center North (ARCN), Borstel, Germany
| | - Askin Gülsen
- Interdisciplinary Allergy Outpatient Clinic, Department of Pneumology, University of Luebeck, Luebeck, Germany
| | - Sina Freimooser
- Division of Immunodermatology and Allergy Research, Department of Dermatology and Allergy, Hannover Medical School, Hannover, Germany
| | - Lennart Matthias Roesner
- Division of Immunodermatology and Allergy Research, Department of Dermatology and Allergy, Hannover Medical School, Hannover, Germany.,Cluster of Excellence RESIST (EXC 2155), Hannover Medical School, Hannover, Germany
| | - Thomas Werfel
- Division of Immunodermatology and Allergy Research, Department of Dermatology and Allergy, Hannover Medical School, Hannover, Germany.,Cluster of Excellence RESIST (EXC 2155), Hannover Medical School, Hannover, Germany
| | - Uta Jappe
- Division of Clinical and Molecular Allergology, Priority Area Asthma and Allergy, Research Center Borstel, German Center for Lung Research (DZL) Airway Research Center North (ARCN), Borstel, Germany.,Interdisciplinary Allergy Outpatient Clinic, Department of Pneumology, University of Luebeck, Luebeck, Germany
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17
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Srisomboon Y, Iijima K, Colwell M, Maniak PJ, Macchietto M, Faulk C, Kita H, O'Grady SM. Allergen-induced DNA release by the airway epithelium amplifies type 2 immunity. J Allergy Clin Immunol 2023; 151:494-508.e6. [PMID: 36306937 PMCID: PMC10324884 DOI: 10.1016/j.jaci.2022.09.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 08/10/2022] [Accepted: 09/15/2022] [Indexed: 11/06/2022]
Abstract
BACKGROUND Alternaria alternata and house dust mite exposure evokes IL-33 secretion from the airway epithelium, which functions as an alarmin to stimulate type 2 immunity. Extracellular DNA (eDNA) is also an alarmin that intensifies inflammation in cystic fibrosis, chronic obstructive pulmonary disease, and asthma. OBJECTIVE We investigated the mechanisms underlying allergen-evoked DNA mobilization and release from the airway epithelium and determined the role of eDNA in type 2 immunity. METHODS Human bronchial epithelial (hBE) cells were used to characterize allergen-induced DNA mobilization and extracellular release using comet assays to measure DNA fragmentation, Qubit double-stranded DNA assays to measure DNA release, and DNA sequencing to determine eDNA composition. Mice were used to investigate the role of eDNA in type 2 immunity. RESULTS Alternaria extract rapidly induces mitochondrial and nuclear DNA release from human bronchial epithelial cells, whereas house dust mite extract induces mitochondrial DNA release. Caspase-3 is responsible for nuclear DNA fragmentation and becomes activated after cleavage by furin. Analysis of secreted nuclear DNA showed disproportionally higher amounts of promotor and exon sequences and lower intron and intergenic regions compared to predictions of random DNA fragmentation. In mice, Alternaria-induced type 2 immune responses were blocked by pretreatment with a DNA scavenger. In caspase-3-deficient mice, Alternaria-induced DNA release was suppressed. Furthermore, intranasal administration of mouse genomic DNA with Alternaria amplified secretion of IL-5 and IL-13 into bronchoalveolar lavage fluid while DNA alone had no effect. CONCLUSION These findings highlight a novel, allergen-induced mechanism of rapid DNA release that amplifies type 2 immunity in airways.
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Affiliation(s)
- Yotesawee Srisomboon
- Departments of Animal Science, Integrative Biology, and Physiology, University of Minnesota, St Paul, Minn
| | - Koji Iijima
- Division of Allergy, Asthma, and Clinical Immunology, Mayo Clinic Arizona, Scottsdale, Ariz
| | - Mathia Colwell
- Departments of Animal Science, Integrative Biology, and Physiology, University of Minnesota, St Paul, Minn
| | - Peter J Maniak
- Departments of Animal Science, Integrative Biology, and Physiology, University of Minnesota, St Paul, Minn
| | - Marissa Macchietto
- Minnesota Super Computing Institute, University of Minnesota, Minneapolis, Minn
| | - Christopher Faulk
- Departments of Animal Science, Integrative Biology, and Physiology, University of Minnesota, St Paul, Minn
| | - Hirohito Kita
- Division of Allergy, Asthma, and Clinical Immunology, Mayo Clinic Arizona, Scottsdale, Ariz.
| | - Scott M O'Grady
- Departments of Animal Science, Integrative Biology, and Physiology, University of Minnesota, St Paul, Minn.
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18
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Zemelka-Wiacek M, Kosowska A, Winiarska E, Sobanska E, Jutel M. Validated allergen exposure chamber is plausible tool for the assessment of house dust mite-triggered allergic rhinitis. Allergy 2023; 78:168-177. [PMID: 35980665 PMCID: PMC10087469 DOI: 10.1111/all.15485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 07/11/2022] [Accepted: 08/02/2022] [Indexed: 12/30/2022]
Abstract
BACKGROUND Allergen exposure chamber (AEC) is a clinical facility that allows exposure to allergenic airborne particles in controlled environment. Although AECs offer stable levels of airborne allergens, the validation of symptoms and other endpoints induced by allergen challenge is key for their recommendation as a plausible tool for the assessment of patients, especially in clinical research. This study aimed to demonstrate the reproducibility of defined clinical endpoints after AEC house dust mite (HDM) challenge under optimal conditions in patients with allergic rhinitis (AR). METHOD HDM was distributed at different concentrations. The assessment was subjective by the patients: total nasal symptom score (TNSS), visual analog scale (VAS), and objective by the investigator: acoustic rhinometry, peak nasal inspiratory flow (PNIF), and nasal secretion weight. Safety was assessed clinically and by peak expiratory flow rate (PEFR) and forced expiratory volume in the first second (FEV1 ). RESULTS Constant environment: temperature, humidity, and carbon dioxide (CO2 ) concentration were maintained during all challenges. The concentration of HDM on average remained stable within the targeted values: 1000, 3000, 5000, 7000 particles (p)/m3 . Most symptoms were observed at concentrations 3000 p/m3 or higher. The symptoms severity and other endpoints results were reproducible. 5000 p/m3 , and challenge duration of 120 min were found optimal. The procedure was safe with no lung function abnormalities due to challenge. CONCLUSION HDM challenge in ALL-MED AEC offers a safe and reliable method for inducing symptoms in AR patients for the use in controlled clinical studies including allergen immunotherapy.
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Affiliation(s)
| | - Anna Kosowska
- Department of Clinical Immunology, Wroclaw Medical University, Wroclaw, Poland.,ALL-MED Medical Research Institute, Wroclaw, Poland
| | - Ewa Winiarska
- Department of Clinical Immunology, Wroclaw Medical University, Wroclaw, Poland
| | - Ewa Sobanska
- Department of Clinical Immunology, Wroclaw Medical University, Wroclaw, Poland
| | - Marek Jutel
- Department of Clinical Immunology, Wroclaw Medical University, Wroclaw, Poland.,ALL-MED Medical Research Institute, Wroclaw, Poland
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19
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Kelly PA, McKay JS, Maguire D, Jones M, Roberts L, Powell F, Breathnach R. A retrospective study of cases of canine demodicosis submitted to a commercial diagnostic laboratory servicing the United Kingdom and Ireland (2017-2018): Part 1 - Signalment, lesion distribution, treatments, and concurrent diseases. Res Vet Sci 2022; 153:99-104. [PMID: 36334408 DOI: 10.1016/j.rvsc.2022.10.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 10/25/2022] [Accepted: 10/26/2022] [Indexed: 11/06/2022]
Abstract
Canine demodicosis, due to an overpopulation of Demodex spp. mites, remains one of the most common dermatological diseases encountered in small animal practice. The aims of this study were to interrogate submitted histories and diagnostic report results from a large cohort of dogs (n = 508) diagnosed with demodicosis either through histological analysis or the finding of Demodex spp. mites on skin scrapings by a UKAS accredited commercial laboratory servicing the United Kingdom (UK) and Ireland in the years 2017 and 2018. The main findings revealed that short-coated breeds were more likely to develop juvenile-onset (JO) demodicosis, whereas medium- and long-coated breeds were more likely to develop adult-onset (AO) disease. Pododemodicosis was reported more commonly in adult, long-coated breeds. Skin scrapings were positive in only 83.3% of samples that had a corresponding positive biopsy result; this finding highlights the necessity to perform further diagnostic tests if demodicosis remains clinically suspected despite a negative skin scraping result. Concurrent underlying diseases, potentially associated with immunosuppression, were reported in 42/221 (19%) of dogs with AO demodicosis. Serum allergy and Sarcoptes ELISA assays were positive in individual animals in both the JO and AO groups; the clinical significance of these latter findings requires careful interpretation in dogs with confirmed demodicosis.
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Affiliation(s)
- Pamela A Kelly
- University College Dublin Veterinary Hospital, School of Veterinary Medicine, Belfield, Dublin 4, Ireland; The Charles Institute of Dermatology, University College Dublin, Belfield, Dublin 4, Ireland.
| | - Jennifer S McKay
- IDEXX Laboratories, Grange House, Sandbeck Way, Wetherby LS22 7DN, United Kingdom.
| | - David Maguire
- IDEXX Laboratories, Grange House, Sandbeck Way, Wetherby LS22 7DN, United Kingdom.
| | - Matthew Jones
- IDEXX Laboratories, Grange House, Sandbeck Way, Wetherby LS22 7DN, United Kingdom.
| | - Larry Roberts
- IDEXX Laboratories, Grange House, Sandbeck Way, Wetherby LS22 7DN, United Kingdom.
| | - Frank Powell
- The Charles Institute of Dermatology, University College Dublin, Belfield, Dublin 4, Ireland; The Mater Misericordiae University Hospital, Eccles St, Dublin 7, Ireland.
| | - Rory Breathnach
- University College Dublin Veterinary Hospital, School of Veterinary Medicine, Belfield, Dublin 4, Ireland.
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20
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Daramola AK, Akinrinmade OA, Fajemisin EA, Naran K, Mthembu N, Hadebe S, Brombacher F, Huysamen AM, Fadeyi OE, Hunter R, Barth S. A recombinant Der p 1-specific allergen-toxin demonstrates superior killing of allergen-reactive IgG + hybridomas in comparison to its recombinant allergen-drug conjugate. IMMUNOTHERAPY ADVANCES 2022; 3:ltac023. [PMID: 36789295 PMCID: PMC9912260 DOI: 10.1093/immadv/ltac023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022] Open
Abstract
Introduction Current treatments for asthma help to alleviate clinical symptoms but do not cure the disease. In this study, we explored a novel therapeutic approach for the treatment of house dust mite allergen Der p 1induced asthma by aiming to eliminate specific population of B-cells involved in memory IgE response to Der p 1. Materials and Methods To achieve this aim, we developed and evaluated two different proDer p 1-based fusion proteins; an allergen-toxin (proDer p 1-ETA) and an allergen-drug conjugate (ADC) (proDer p 1-SNAP-AURIF) against Der p 1 reactive hybridomas as an in vitro model for Der p 1 reactive human B-cells. The strategy involved the use of proDer p 1 allergen as a cell-specific ligand to selectively deliver the bacterial protein toxin Pseudomonas exotoxin A (ETA) or the synthetic small molecule toxin Auristatin F (AURIF) into the cytosol of Der p 1 reactive cells for highly efficient cell killing. Results As such, we demonstrated recombinant proDer p 1 fusion proteins were selectively bound by Der p 1 reactive hybridomas as well as primary IgG1+ B-cells from HDM-sensitized mice. The therapeutic potential of proDer p 1-ETA' and proDer p 1-SNAP-AURIF was confirmed by their selective cytotoxic activities on Der p 1 reactive hybridoma cells. The allergen-toxin demonstrated superior cytotoxic activity, with IC50 values in the single digit nanomolar value, compared to the ADC. Discussions Altogether, the proof-of-concept experiments in this study provide a promising approach for the treatment of patients with house dust mite-driven allergic asthma.
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Affiliation(s)
- A K Daramola
- South African Research Chair in Cancer Biotechnology, Department of Integrative Biomedical Sciences, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa,Medical Biotechnology & Immunotherapy Research Unit, Institute of Infectious Disease and Molecular Medicine (IDM), Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - O A Akinrinmade
- South African Research Chair in Cancer Biotechnology, Department of Integrative Biomedical Sciences, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa,Medical Biotechnology & Immunotherapy Research Unit, Institute of Infectious Disease and Molecular Medicine (IDM), Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa,Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - E A Fajemisin
- South African Research Chair in Cancer Biotechnology, Department of Integrative Biomedical Sciences, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa,Medical Biotechnology & Immunotherapy Research Unit, Institute of Infectious Disease and Molecular Medicine (IDM), Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - K Naran
- South African Research Chair in Cancer Biotechnology, Department of Integrative Biomedical Sciences, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa,Medical Biotechnology & Immunotherapy Research Unit, Institute of Infectious Disease and Molecular Medicine (IDM), Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - N Mthembu
- Division of Immunology, Department of Pathology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - S Hadebe
- Division of Immunology, Department of Pathology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - F Brombacher
- Division of Immunology, Department of Pathology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa,International Centre for Genetic Engineering and Biotechnology (ICGEB) and Institute of Infectious Diseases and Molecular Medicine (IDM), Division of Immunology, Faculty of Health Sciences, University of Cape Town, South Africa,Wellcome Centre for Infectious Diseases Research in Africa (CIDRI-Africa), Institute of Infectious Diseases and Molecular Medicine (IDM), Faculty of Health Sciences, University of Cape Town, South Africa
| | - A M Huysamen
- Department of Chemistry, Faculty of Sciences, University of Cape Town, Cape Town, South Africa
| | - O E Fadeyi
- Department of Chemistry, Faculty of Sciences, University of Cape Town, Cape Town, South Africa
| | - R Hunter
- Department of Chemistry, Faculty of Sciences, University of Cape Town, Cape Town, South Africa
| | - S Barth
- Correspondence: Stefan Barth, South African Research Chair in Cancer Biotechnology, Department of Integrative Biomedical Sciences, Faculty of Health Sciences, University of Cape Town, Barnard Fuller Building, Anzio Rd, Observatory, Cape Town, 7935 South Africa.
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21
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González-Pérez R, Poza-Guedes P, Mederos-Luis E, Sánchez-Machín I. Real-Life Performance of Mepolizumab in T2-High Severe Refractory Asthma with the Overlapping Eosinophilic-Allergic Phenotype. Biomedicines 2022; 10:biomedicines10102635. [PMID: 36289896 PMCID: PMC9599709 DOI: 10.3390/biomedicines10102635] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 10/16/2022] [Accepted: 10/17/2022] [Indexed: 11/17/2022] Open
Abstract
Severe asthma (SA) is categorized into multiple overlapping phenotypes and clinical characteristics driven by complex mechanistic inflammatory pathways. Mepolizumab is a human monoclonal antibody effectively targeting interleukin-5 in severe eosinophilic asthma. However, the eligibility of biologics in coincident SA phenotypes is still unclear. We assessed the efficacy and safety of mepolizumab in real-life patients with the overlapping T2-high SA endotype. This was a phase IV, single-centre observational cohort study including patients with severe refractory T2-high asthma in treatment with mepolizumab. After 12 months of treatment with mepolizumab, significant improvements (p < 0.0001) in asthma control and lung function were recorded. Rates of clinically significant annual asthma exacerbation were also decreased by 71.22% after 52-week therapy with mepolizumab (p < 0.001) associated with a reduction in the mean daily dose of oral corticosteroids. Two patients (3.27%) had to discontinue mepolizumab due to musculoskeletal disorders with no severe safety issues reported. The use of mepolizumab as an add-on therapy in routine clinical practice was safely associated with significant clinical and functional in the overlapping eosinophilic-and-allergic SA phenotype. The current data should support clinical and therapeutic decision-making in this T2-high SA endotype.
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Affiliation(s)
- Ruperto González-Pérez
- Allergy Department, Hospital Universitario de Canarias, 38320 Tenerife, Spain
- Severe Asthma Unit, Hospital Universitario de Canarias, 38320 Tenerife, Spain
- Correspondence: ; Tel.: +34-922-677237
| | - Paloma Poza-Guedes
- Allergy Department, Hospital Universitario de Canarias, 38320 Tenerife, Spain
- Severe Asthma Unit, Hospital Universitario de Canarias, 38320 Tenerife, Spain
| | - Elena Mederos-Luis
- Allergy Department, Hospital Universitario de Canarias, 38320 Tenerife, Spain
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22
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Potapova E, Bordas-Le Floch V, Schlederer T, Vrtala S, Huang HJ, Canonica GW, Valenta R, Matricardi PM, Mascarell L. Molecular reactivity profiling upon immunotherapy with a 300 IR sublingual house dust mite tablet reveals marked humoral changes towards major allergens. Allergy 2022; 77:3084-3095. [PMID: 35474582 DOI: 10.1111/all.15327] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 03/21/2022] [Accepted: 03/30/2022] [Indexed: 01/28/2023]
Abstract
BACKGROUND Molecular antibody reactivity profiles have not yet been studied in depth in patients treated by sublingual house dust mite (HDM) tablet immunotherapy. Humoral immune responses to a large panel of HDM mite allergens were studied using allergen microarray technology in a subset of clinically defined high and low responder patients from a double-blind placebo-controlled allergen-specific immunotherapy (AIT) trial using sublingual 300 IR HDM tablets. METHODS Serum levels of IgE, IgG and IgG4 to 13 Dermatophagoides pteronyssinus molecules were measured at baseline and after 1-year AIT, using allergen microarrays in 100 subjects exhibiting high or low clinical benefit. RESULTS Der p 1, Der p 2 and Der p 23 were the most frequently recognized allergens in the study population. Patients with HDM-related asthma had significantly higher allergen-specific IgE levels to Der p 1 and Der p 23. No significant difference in the distribution of allergen sensitization pattern was observed between high and low responders. An increase in serum allergen-specific IgG and IgG4 occurred upon AIT, in particular to allergens Der p 1, Der p 2 and Der p 23 (p < 0.0001). CONCLUSIONS We confirm for our study population that Der p 1- and Der p 23-specific IgE levels are associated with asthma. IgE reactivity profiles were not predicitive of sublingual AIT outcomes, with 300 IR tablets as efficacious in pauci- and multi-sensitized subjects. Our study is the first to demonstrate the induction of IgG and IgG4 specific for the HDM allergens Der p 1, Der p 2 and Der p 23 by sublingual AIT.
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Affiliation(s)
- Ekaterina Potapova
- Department of Pediatric Pulmonology, Immunology and Critical Care Medicine, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | | | - Thomas Schlederer
- Department of Pathophysiology and Allergy Research, Division of Immunopathology, Center of Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna and Krems, Austria
| | - Susanne Vrtala
- Department of Pathophysiology and Allergy Research, Division of Immunopathology, Center of Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna and Krems, Austria
| | - Huey-Jy Huang
- Department of Pathophysiology and Allergy Research, Division of Immunopathology, Center of Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna and Krems, Austria
| | - Giorgio W Canonica
- Personalized Medicine, Asthma and Allergy, Humanitas Clinical and Research Center IRCCS, Milan, Italy
| | - Rudolf Valenta
- Department of Pathophysiology and Allergy Research, Division of Immunopathology, Center of Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna and Krems, Austria.,NRC Institute of Immunology, Federal Biomedical Agency of Russia, Moscow, Russia.,Department of Clinical Immunology and Allergy, Sechenov First State Medical University, Moscow, Russia.,Karl Landsteiner University of Health Sciences, Krems, Austria
| | - Paolo M Matricardi
- Department of Pediatric Pulmonology, Immunology and Critical Care Medicine, Charité-Universitätsmedizin Berlin, Berlin, Germany
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23
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Buzan M, Zbîrcea L, Gattinger P, Babaev E, Stolz F, Valenta R, Păunescu V, Panaitescu C, Chen K. Complex IgE sensitization patterns in ragweed allergic patients: Implications for diagnosis and specific immunotherapy. Clin Transl Allergy 2022; 12:e12179. [PMID: 35813977 PMCID: PMC9254219 DOI: 10.1002/clt2.12179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 05/11/2022] [Accepted: 06/26/2022] [Indexed: 11/21/2022] Open
Abstract
Background Ragweed (Ambrosia artemisiifolia) is one of the most important allergen sources, worldwide, causing severe respiratory allergic reactions in late summer and fall, in sensitized patients. Amb a 1 has been considered as the most important allergen in ragweed but 12 ragweed pollen allergens are known. The aim of our study was to investigate IgE reactivity profiles of ragweed allergic patients and to associate them with clinical symptoms. Methods IgE sensitization profiles from clinically well-characterized ragweed allergic patients (n = 150) were analyzed using immunoblotted ragweed pollen extract. Immunoblot inhibition experiments were performed with two Amb a 1 isoforms and CCD markers and basophil activation experiments were performed with IgE serum before and after depletion of Amb a 1-specific IgE. Results By IgE-immunoblotting 19 different IgE reactivity patterns with and without Amb a 1-sensitization were found. The majority of patients (>95%) suffered from rhino-conjunctivitis, around 60% reported asthma-like symptoms and about 25% had skin reactions. Patients with complex IgE sensitization profiles tended to have more clinical symptoms. Serum with and without Amb a 1-specific IgE induced basophil activation. Conclusions Ragweed pollen allergic patients exhibit complex IgE reactivity profiles to ragweed allergens including Amb a 1 isoforms and cross-reactive carbohydrates indicating the importance of Amb a 1 isoforms and additional allergens for diagnosis and allergen-specific immunotherapy of ragweed allergy.
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Affiliation(s)
- Maria‐Roxana Buzan
- Center of Immuno‐Physiology and Biotechnologies, Department of Functional SciencesVictor Babes University of Medicine and PharmacyTimisoaraRomania
- OncoGen CenterPius Brinzeu County Clinical Emergency HospitalTimisoaraRomania
| | - Lauriana‐Eunice Zbîrcea
- Center of Immuno‐Physiology and Biotechnologies, Department of Functional SciencesVictor Babes University of Medicine and PharmacyTimisoaraRomania
- OncoGen CenterPius Brinzeu County Clinical Emergency HospitalTimisoaraRomania
| | - Pia Gattinger
- Department of Pathophysiology and Allergy Research, Division of Immunopathology, Center of Pathophysiology, Infectiology and ImmunologyMedical University of ViennaViennaAustria
| | | | - Frank Stolz
- Biomay AGVienna Competence CenterViennaAustria
| | - Rudolf Valenta
- Department of Pathophysiology and Allergy Research, Division of Immunopathology, Center of Pathophysiology, Infectiology and ImmunologyMedical University of ViennaViennaAustria
- Laboratory for Immunopathology, Department of Clinical Immunology and AllergologySechenov First Moscow State Medical UniversityMoscowRussia
- Karl Landsteiner University of Health SciencesKremsAustria
- NRC Institute of Immunology FMBA of RussiaMoscowRussia
| | - Virgil Păunescu
- Center of Immuno‐Physiology and Biotechnologies, Department of Functional SciencesVictor Babes University of Medicine and PharmacyTimisoaraRomania
- OncoGen CenterPius Brinzeu County Clinical Emergency HospitalTimisoaraRomania
| | - Carmen Panaitescu
- Center of Immuno‐Physiology and Biotechnologies, Department of Functional SciencesVictor Babes University of Medicine and PharmacyTimisoaraRomania
- OncoGen CenterPius Brinzeu County Clinical Emergency HospitalTimisoaraRomania
| | - Kuan‐Wei Chen
- OncoGen CenterPius Brinzeu County Clinical Emergency HospitalTimisoaraRomania
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24
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Forchert L, Potapova E, Panetta V, Dramburg S, Perna S, Posa D, Resch-Marat Y, Lupinek C, Rohrbach A, Grabenhenrich L, Icke K, Bauer CP, Hoffman U, Forster J, Zepp F, Schuster A, Wahn U, Keil T, Lau S, Vrtala S, Valenta R, Matricardi PM. Der p 23-specific IgE response throughout childhood and its association with allergic disease: A birth cohort study. Pediatr Allergy Immunol 2022; 33:e13829. [PMID: 35871456 DOI: 10.1111/pai.13829] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 06/02/2022] [Accepted: 06/18/2022] [Indexed: 01/08/2023]
Abstract
BACKGROUND The Dermatophagoides pteronyssinus molecule Der p 23 is a major allergen whose clinical relevance has been shown in cross-sectional studies. We longitudinally analysed the trajectory of Der p 23-specific IgE antibody (sIgE) levels throughout childhood and youth, their early-life determinants and their clinical relevance for allergic rhinitis and asthma. METHODS We obtained sera and clinical data of 191 participants of the German Multicentre Allergy Study, a prospective birth cohort. Serum samples from birth to 20 years of age with sIgE reactivity to Der p 23 in a customised semiquantitative microarray were newly analysed with a singleplex quantitative assay. Early mite exposure was assessed by measuring the average content of Der p 1 in house dust at 6 and 18 months. RESULTS Der p 23-sIgE levels were detected at least once in 97/191 participants (51%). Prevalence of Der p 23 sensitisation and mean sIgE levels increased until age 10 years, plateaued until age 13 years and were lowest at age 20 years. Asthma, allergic rhinitis (AR) and atopic dermatitis (AD) were more prevalent in Der p 23-sensitised children, including those with monomolecular but persistent sensitisation (11/97, 11%). A higher exposure to mites in infancy and occurrence of AD before 5 years of age preceded the onset of Der p 23 sensitisation, which in turn preceded a higher incidence of asthma. CONCLUSIONS Der p 23 sensitisation peaks in late childhood and then decreases. It is preceded by early mite exposure and AD. Asthma and AR can occur in patients persistently sensitised to Der p 23 as the only mite allergen, suggesting the inclusion of molecular testing of Der p 23-sIgE for subjects with clinical suspicion of HDM allergy but without sIgE to other major D.pt. allergens.
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Affiliation(s)
- Leandra Forchert
- The Department of Pediatrics, Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Ekaterina Potapova
- The Department of Pediatrics, Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Valentina Panetta
- L'altrastatistica srl, Consultancy & Training, Biostatistics office, Rome, Italy
| | - Stephanie Dramburg
- The Department of Pediatrics, Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Serena Perna
- The Department of Pediatrics, Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Daniela Posa
- The Department of Pediatrics, Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Yvonne Resch-Marat
- The Division of Immunopathology, Department of Pathophysiology and Allergy Research, Centre of Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Wien, Austria
| | - Christian Lupinek
- The Division of Immunopathology, Department of Pathophysiology and Allergy Research, Centre of Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Wien, Austria
| | - Alexander Rohrbach
- The Department of Pediatrics, Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Linus Grabenhenrich
- The Institute for Social Medicine, Epidemiology and Health Economics, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Katja Icke
- The Institute for Social Medicine, Epidemiology and Health Economics, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Carl-Peter Bauer
- The Department of Pediatrics, Technical University of Munich, Munich, Germany
| | - Ute Hoffman
- The Department of Pediatrics, Technical University of Munich, Munich, Germany
| | - Johannes Forster
- The Department of Pediatrics, Allergy Working Group, University Clinic Freiburg, Freiburg, Germany
| | - Fred Zepp
- The Department of Pediatrics and Adolescent Medicine, University Medicine Mainz, Mainz, Germany
| | - Antje Schuster
- The Department of Pediatrics, Heinrich-Heine-University, Düsseldorf, Germany
| | - Ulrich Wahn
- The Department of Pediatrics, Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Thomas Keil
- The Institute for Social Medicine, Epidemiology and Health Economics, Charité-Universitätsmedizin Berlin, Berlin, Germany.,The Institute of Clinical Epidemiology and Biometry, University of Würzburg, Würzburg, Germany.,The State Institute of Health, Bavarian Health and Food Safety Authority, Bad Kissingen, Germany
| | - Susanne Lau
- The Department of Pediatrics, Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Susanne Vrtala
- The Division of Immunopathology, Department of Pathophysiology and Allergy Research, Centre of Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Wien, Austria
| | - Rudolf Valenta
- The Division of Immunopathology, Department of Pathophysiology and Allergy Research, Centre of Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Wien, Austria
| | - Paolo Maria Matricardi
- The Department of Pediatrics, Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine, Charité-Universitätsmedizin Berlin, Berlin, Germany
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25
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González-Pérez R, Poza-Guedes P, Pineda F, Castillo M, Sánchez-Machín I. Storage Mite Precision Allergy Molecular Diagnosis in the Moderate-to-Severe T2-High Asthma Phenotype. Int J Mol Sci 2022; 23:ijms23084297. [PMID: 35457116 PMCID: PMC9030016 DOI: 10.3390/ijms23084297] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 04/05/2022] [Accepted: 04/11/2022] [Indexed: 12/30/2022] Open
Abstract
Storage mites (SM) may induce allergic respiratory symptoms in sensitized individuals, in both rural and urban settings. The relationship among specific IgE reactions to determined groups of SM allergens in the coincident asthma pheno-endotypes has not yet been investigated. We aimed to study a Precision Allergy Molecular Diagnosis (PAMD@) model to depict the SM molecular profile in individuals presenting with Type-2 inflammation, in two different (moderate and severe) asthma phenotypes. A customized PAMD@ panel, including SM allergens and their concurrent protein allergenic characterization was investigated. Mite group 2 allergens were most frequently recognized, including Lep d 2 (83.45%), followed by Gly d 2 (69.17%) and Tyr p 2 (47,37%), in 133/164 asthmatic subjects. Blo t 5 and Blo t 21 exhibited significant higher titres in both asthma groups. Although relevant mite group 2 allergens cross-reactivity is suggested, individualized sensitization patterns were relevantly identified. The present PAMD@ panel confirmed the dominance of mite group 2 allergens in moderate-to-severe T2 asthmatics. A broadly heterogeneous molecular repertoire of SM allergens was found in all subjects, regardless of their asthma severity. Blomia tropicalis deserves special attention in certain territories, as diagnostic and/or therapeutic approaches merely based on Pyroglyphidae mites may be insufficient.
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Affiliation(s)
- Ruperto González-Pérez
- Allergy Department, Hospital Universitario de Canarias, 38320 Tenerife, Spain; (P.P.-G.); (I.S.-M.)
- Severe Asthma Unit, Hospital Universitario de Canarias, 38320 Tenerife, Spain
- Correspondence: ; Tel.: +34-922-677237
| | - Paloma Poza-Guedes
- Allergy Department, Hospital Universitario de Canarias, 38320 Tenerife, Spain; (P.P.-G.); (I.S.-M.)
- Severe Asthma Unit, Hospital Universitario de Canarias, 38320 Tenerife, Spain
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Ogasawara A, Yuki T, Katagiri A, Lai YT, Takahashi Y, Basketter D, Sakaguchi H. Proteolytic activity accelerates the T H17/T H22 recall response to an epicutaneous protein allergen-induced T H2 response. J Immunotoxicol 2022; 19:27-33. [PMID: 35378053 DOI: 10.1080/1547691x.2022.2049665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Abstract
Epicutaneous exposure to protein allergens, such as papain, house dust mite (HDM), and ovalbumin (OVA), represents an important mode of sensitization for skin diseases including protein contact dermatitis, immunologic contact urticaria, and atopic dermatitis. These diseases are inducible by re-exposure to an allergen at both original skin sensitization and distant skin sites. In this study, we examined the serum IgE/IgG1 response, differentiation of T-helper (TH) cells, and epicutaneous TH recall response in mice pre-sensitized with protein allergens through the back skin and subsequently challenged on the ear skin. Repeated epicutaneous sensitization with allergenic proteins including papain, HDM, OVA, and protease inhibitor-treated papain, but not bovine serum albumin, induced serum allergen-specific antibody production, passive cutaneous anaphylaxis responses, and TH2 differentiation in the skin draining lymph node (DLN) cells. Sensitization with papain or HDM, which have protease activity, resulted in the differentiation of TH17 as well as TH2. In papain- or HDM-sensitized mice, a subsequent single challenge on the ear skin induced the expression of TH2 and TH17/TH22 cytokines. These results suggest that allergenic proteins induce the differentiation of TH2 in skin DLN cells and an antibody response. These findings may be useful for identifying proteins of high and low allergenic potential. Moreover, allergenic proteins containing protease activity may also differentiate TH17 and induce TH2 and TH17/TH22 recall responses at epicutaneous challenge sites. This suggests that allergen protease activity accelerates the onset of skin diseases caused by protein allergens.
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Affiliation(s)
- Akira Ogasawara
- Safety Science Research Laboratories, Kao Corporation, Tochigi, Japan
| | - Takuo Yuki
- Safety Science Research Laboratories, Kao Corporation, Tochigi, Japan
| | - Asuka Katagiri
- Safety Science Research Laboratories, Kao Corporation, Tochigi, Japan
| | - Yi-Ting Lai
- Safety Science Research Laboratories, Kao Corporation, Tochigi, Japan
| | - Yutaka Takahashi
- Safety Science Research Laboratories, Kao Corporation, Tochigi, Japan
| | | | - Hitoshi Sakaguchi
- Safety Science Research Laboratories, Kao Corporation, Tochigi, Japan
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Hasegawa A, Utsumi D, Lund K, Okano M, Ohashi-Doi K, Okubo K. Correlation between sensitization to house dust mite major allergens, age, and symptoms in Japanese house dust mite allergic subjects. Int Immunopharmacol 2022; 107:108640. [PMID: 35217338 DOI: 10.1016/j.intimp.2022.108640] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 02/07/2022] [Accepted: 02/17/2022] [Indexed: 12/23/2022]
Abstract
Der p 23 has recently been recognized as a new house dust mite (HDM) major allergen that may be linked to the development of asthma in HDM allergic patients. This study aimed to investigate the frequency of sensitization to HDM major allergen components including Der p 23 and to examine the correlation between HDM-sensitization and AR symptom score in Japanese HDM allergic rhinitis (AR) patients without allergic asthma. Serum samples (n = 120) collected from Japanese HDM AR patients (12 to 64 years) without asthma were assessed for allergen-specific IgE (s-IgE) by ImmunoCAP (Dermatophagoides pteronyssinus (D. pteronyssinus; Der p) extract, Der p 23) or immunosolid-phase allergen chip (Der p 1, Der p 2). Japanese HDM AR patients without asthma showed a high prevalence of allergic sensitization to the HDM major allergens Der p 1 (94.2%), Der p 2 (97.5%) and Der p 23 (71.7%). No difference in the prevalence was detected for Der p 1 and Der p 2 s-IgE among three age groups. However, the prevalence of Der p 23 s-IgE was significantly higher in the younger group compared to the elderly group. No significant correlation was found between AR symptom scores and concentration of s-IgE towards Der p extract and any of the three HDM major allergens. Although the prevalence of sensitization towards D. pteronyssinus major allergens is high in Japanese AR patients without asthma, there was no correlation between allergen specific IgE including IgE towards Der p 23 and AR symptom in this population.
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Affiliation(s)
| | | | | | - Mitsuhiro Okano
- Department of Otorhinolaryngology, International University of Health and Welfare Graduate School of Medicine, Chiba, Japan
| | | | - Kimihiro Okubo
- Otorhinolaryngology and Head and Neck Surgery, Nippon Medical School, Tokyo, Japan
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28
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Letrán A, García I, Espinazo-Romeu M, Moreno-Aguilar C, Moreno F. Cut-off value of D. pteronyssinus specific IgE in double negative patients Der p 1 and Der p 2 and its clinical repercussion. Sci Rep 2021; 11:23585. [PMID: 34880341 PMCID: PMC8655041 DOI: 10.1038/s41598-021-03005-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 11/10/2021] [Indexed: 11/09/2022] Open
Abstract
Accessibility to more precise diagnostic techniques such as component resolved diagnostics (CRD), provides us with an important advance in diagnostic aspects as well as treatment. The subject of this study aims to better understand the profiles of sensitization to Der p 1, Der p 2 and Der p 23 and to know to what extent their use could help us in optimizing the decision-making for their treatment with Specific Immunotherapy. Cross-sectional study of subjects older than 5 years, diagnosed with allergy to HDM using skin prick test and sIgE, with symptoms of rhinitis and/or asthma. Total and specific IgE was determined to D. pteronyssinus, nDer p 1, rDer p 2 and rDer p 23 using ImmunoCAP. 240 patients were recruited (97.1% rhinitis and 46.25% rhinitis and asthma). Four different phenotypes were observed: positive or negative for sIgE nDer p 1 and/or IgE rDer p 2. 17% of these patients sIgE were double negative for Der p 1 and Der p 2 (increasing with age and with significantly lower sIgE levels than the rest of the groups). Using ROC curves, value less than 2.18 KUA/L for D. pteronyssinus sIgE gave us a sensitivity and specificity of 0.882 and 0.985, respectively, to double negative IgE nDer p 1 and IgE rDer p 2 group. Despite positive SPT and sIgE to D. pteronyssinus, 17% of the studied population is IgE nDer p 1 and IgE rDer p 2 double negative, with a cut-off value of 2.18 KU/L, which is very relevant for taking of decisions in prescription of AIT. The double positive population sIgE nDer p 1 and IgE rDer p 2 is associated with asthma compared to the other groups and this does not seem to be influenced by IgE rDer p 23.
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Affiliation(s)
- Antonio Letrán
- Servicio de Alergología e Inmunología, CM ASISA Lobatón, Cádiz, Spain
| | | | - Marisa Espinazo-Romeu
- GC01 Laboratorio de Inmunología y Alergia, Maimonides Biomedical Research Institute of Cordoba (IMIBIC)/Reina Sofia University Hospital/University of Cordoba, Avenida Menéndez Pidal, S/N, 14004, Córdoba, Spain.
- National Network ARADyAL, Health Institute Carlos III, Madrid, Spain.
| | - Carmen Moreno-Aguilar
- GC01 Laboratorio de Inmunología y Alergia, Maimonides Biomedical Research Institute of Cordoba (IMIBIC)/Reina Sofia University Hospital/University of Cordoba, Avenida Menéndez Pidal, S/N, 14004, Córdoba, Spain
- National Network ARADyAL, Health Institute Carlos III, Madrid, Spain
- Department of Immunology and Allergy, Reina Sofia University Hospital, Cordoba, Spain
| | - Francisco Moreno
- Servicio de Alergología e Inmunología, CM ASISA Lobatón, Cádiz, Spain
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Yu PY, Zhu Y, Tan LX, Xu ZQ, Lu C, Guan XW. Immunoinformatics Construction of B Cell Epitope-Based Hypoallergenic Der f 34 Vaccine for Immunotherapy of House Dust Mite Allergy. Int J Pept Res Ther 2021. [DOI: 10.1007/s10989-021-10337-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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30
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Questionnaire Survey of Possible Association of Allergic Diseases with Adverse Reactions to SARS-CoV-2 Vaccination. Vaccines (Basel) 2021; 9:vaccines9121421. [PMID: 34960167 PMCID: PMC8708946 DOI: 10.3390/vaccines9121421] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 11/25/2021] [Accepted: 11/29/2021] [Indexed: 11/29/2022] Open
Abstract
To protect against COVID-19, SARS-CoV-2 vaccines have been widely used. Besides anaphylaxis, some less severe adverse effects may occur at higher frequencies. It remains unclear whether present or past histories of allergic diseases exert effects on local and systemic reactions. We conducted a questionnaire survey among workers in our hospital. We analyzed the adverse effects occurring after the first and second doses of the Pfizer–BioNTech vaccine in 955 subjects. The presence or absence of local injection reactions and systemic reactions (headache, fatigability, fever, muscle pain, and joint pain) was questioned. The intensities of these reactions were graded on a scale of 0–4 (except fever) or 0–2 (fever). The allergic diseases that we focused on were bronchial asthma, atopic dermatitis, food allergy, pollinosis, and hand eczema. For the systemic reactions, fatigability after the first dose tended to be more severe in the bronchial asthma than in the non-allergic group. Headache, joint pain, and fever tended to be more severe in the food allergy than in the non-allergic group after the second dose. For the local skin reactions, atopic dermatitis subjects tended to show rather less severe local skin reactions after the second dose. The results contribute to the guidelines for the care of individuals with different allergy histories, so that they may safely receive their vaccine.
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Ogasawara A, Yuki T, Takai T, Yokozeki K, Katagiri A, Takahashi Y, Yokozeki H, Basketter D, Sakaguchi H. Epicutaneous challenge with protease allergen requires its protease activity to recall T H2 and T H17/T H22 responses in mice pre-sensitized via distant skin. J Immunotoxicol 2021; 18:118-126. [PMID: 34487475 DOI: 10.1080/1547691x.2021.1968548] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Epicutaneous exposure to allergenic proteins is an important sensitization route for skin diseases like protein contact dermatitis, immunologic contact urticaria, and atopic dermatitis. Environmental allergen sources such as house dust mites contain proteases, which are frequent allergens themselves. Here, the dependency of T-helper (TH) cell recall responses on allergen protease activity in the elicitation phase in mice pre-sensitized via distant skin was investigated. Repeated epicutaneous administration of a model protease allergen, i.e. papain, to the back skin of hairless mice induced skin inflammation, serum papain-specific IgE and TH2 and TH17 cytokine responses in the sensitization sites, and antigen-restimulated draining lymph node cells. In the papain-sensitized but not vehicle-treated mice, subsequent single challenge on the ear skin with papain, but not with protease inhibitor-treated papain, up-regulated the gene expression of TH2 and TH17/TH22 cytokines along with cytokines promoting these TH cytokine responses (TSLP, IL-33, IL-17C, and IL-23p19). Up-regulation of IL-17A gene expression and cells expressing RORγt occurred in the ear skin of the presensitized mice even before the challenge. In a reconstructed epidermal model with a three-dimensional culture of human keratinocytes, papain but not protease inhibitor-treated papain exhibited increasing transdermal permeability and stimulating the gene expression of TSLP, IL-17C, and IL-23p19. This study demonstrated that allergen protease activity contributed to the onset of cutaneous TH2 and TH17/TH22 recall responses on allergen re-encounter at sites distant from the original epicutaneous sensitization exposures. This finding suggested the contribution of protease-dependent barrier disruption and induction of keratinocyte-derived cytokines to the recall responses.
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Affiliation(s)
- Akira Ogasawara
- Safety Science Research Laboratories, Kao Corporation, Tochigi, Japan
| | - Takuo Yuki
- Safety Science Research Laboratories, Kao Corporation, Tochigi, Japan
| | - Toshiro Takai
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Kyosuke Yokozeki
- Safety Science Research Laboratories, Kao Corporation, Tochigi, Japan
| | - Asuka Katagiri
- Safety Science Research Laboratories, Kao Corporation, Tochigi, Japan
| | - Yutaka Takahashi
- Safety Science Research Laboratories, Kao Corporation, Tochigi, Japan
| | - Hiroo Yokozeki
- Department of Dermatology, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | | | - Hitoshi Sakaguchi
- Safety Science Research Laboratories, Kao Corporation, Tochigi, Japan
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32
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Vidal-Quist JC, Ortego F, Hernández-Crespo P. Contribution of cysteine and serine proteases to proteolytic digestion in an allergy-eliciting house dust mite. JOURNAL OF INSECT PHYSIOLOGY 2021; 133:104285. [PMID: 34284041 DOI: 10.1016/j.jinsphys.2021.104285] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 07/13/2021] [Accepted: 07/13/2021] [Indexed: 06/13/2023]
Abstract
The digestive physiology of house dust mites (HDM) is of interest to understand their allergenicity towards humans since many of their allergens are digestive enzymes and/or are excreted into airborne fecal pellets. The aim of this study is to provide insight on the biochemical basis of proteolytic digestion in Dermatophagoides pteronyssinus, the most widespread HDM species. First, assays using non-specific protein substrates on purified fecal and body extracts determined that body-associated activity is almost exclusively dependent on cysteine proteases, and specifically on major allergen Der p 1. By contrast, cysteine and serine proteases contributed similarly to the activity estimated on fecal extracts. Second, the screening of group-specific peptide-based protease inhibitors followed by ingestion bioassays revealed that the human skin-derived cysteine protease inhibitor cystatin A produces a significant reduction in mite feeding (i.e. excreted guanine), and triggers the overproduction of Der p 1 (3-fold increase by ELISA). Noteworthy, the inhibition of cysteine proteases by cystatin A also resulted in a reduction in three non-target serine protease activities. Further incubation of these extracts with exogenous Der p 1, but not with other commercial cysteine proteases, restored trypsin (Der p 3) and chymotrypsin (Der p 6) activities, indicating that Der p 1 is responsible for their activation in vivo. Finally, the role of serine proteases on the mite's digestive physiology is discussed based on their remarkable activity in fecal extracts and the autocoprophagic behavior reported in mites in this study.
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Affiliation(s)
- José Cristian Vidal-Quist
- Laboratorio de Entomología Aplicada a la Agricultura y la Salud, Centro de Investigaciones Biológicas Margarita Salas CSIC, Spain.
| | - Félix Ortego
- Laboratorio de Entomología Aplicada a la Agricultura y la Salud, Centro de Investigaciones Biológicas Margarita Salas CSIC, Spain
| | - Pedro Hernández-Crespo
- Laboratorio de Entomología Aplicada a la Agricultura y la Salud, Centro de Investigaciones Biológicas Margarita Salas CSIC, Spain
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33
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Takai T. Allergens in modern society: 2021. Allergol Int 2021; 70:279-280. [PMID: 34176582 DOI: 10.1016/j.alit.2021.06.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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34
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Abstract
The house dust mite (HDM) is globally ubiquitous in human habitats. Thirty-two allergens for Dermatophagoides farinae and 21 for Dermatophagoides pteronyssinus have been detected so far. The present minireview summarizes information about the role of Der p 1 as a key coordinator of the HDM-induced allergic response and reports on a series of Italian patients who are allergic to HDMs. We studied the specific IgE profiles in a population of patients with allergic asthma and rhinitis screened for specific immunotherapy (SIT) for HDM allergies, with the aim of obtaining insights into the pathogenic role of Der p1. Patients co-sensitized to other airborne allergens showed a higher prevalence of asthma (9/12 (75%) vs. 2/7 (29%); p < 0.05) than did HDM mono-sensitized patients. The latter group showed higher Der p1 concentrations than that of the co-sensitized group (p = 0.0360), and a direct correlation between Der p1 and Der p2 (r = 0.93; p = 0.0003) was observed. In conclusion, our study offers insights into the role of Der p1 in a population of patients with allergic rhinitis and asthma who were candidates for SIT. Interestingly, Der p1 positivity was associated with bronchial asthma and co-sensitization.
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35
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Caraballo L, Valenta R, Acevedo N, Zakzuk J. Are the Terms Major and Minor Allergens Useful for Precision Allergology? Front Immunol 2021; 12:651500. [PMID: 33763086 PMCID: PMC7982392 DOI: 10.3389/fimmu.2021.651500] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Accepted: 02/15/2021] [Indexed: 12/17/2022] Open
Affiliation(s)
- Luis Caraballo
- Institute for Immunological Research, University of Cartagena, Cartagena, Colombia
| | - Rudolf Valenta
- Department of Pathophysiology and Allergy Research, Division of Immunopathology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria.,Laboratory for Immunopathology, Department of Clinical Immunology and Allergology, Sechenov First Moscow State Medical University, Moscow, Russia.,Karl Landsteiner University of Health Sciences, Krems, Austria.,NRC Institute of Immunology FMBA of Russia, Moscow, Russia
| | - Nathalie Acevedo
- Institute for Immunological Research, University of Cartagena, Cartagena, Colombia
| | - Josefina Zakzuk
- Institute for Immunological Research, University of Cartagena, Cartagena, Colombia
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36
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Ludwig L, Tsukui T, Kageyama M, Farias M. Evaluation of sensitization to the crude extract of Dermatophagoides farinae and its derived allergens, Der f 2 and Zen 1, in dogs with atopic dermatitis in Southern Brazil. Vet Immunol Immunopathol 2021; 234:110199. [PMID: 33662650 DOI: 10.1016/j.vetimm.2021.110199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 01/22/2021] [Accepted: 01/28/2021] [Indexed: 10/22/2022]
Abstract
BACKGROUND Atopic dermatitis is associated with the production of IgE antibodies against environmental allergens and allergens of the house dust miteDermatophagoides farinae are frequently implicated in the disease. OBJECTIVES We aimed to observe the allergen-specific IgE against crudeD. farinae, Der f 2 and Zen 1 in dogs with atopic dermatitis and report if these dogs are in contact with material that could shelter mite allergens. METHODS 100 dogs with clinical diagnosis of atopic dermatitis were included after exclusion of other forms of pruritic skin disease and dogs that already received specific or non-specific immunotherapy. These dogs were of different breeds and ages and they were presented at a veterinary teaching hospital and a private service of veterinary dermatology, both located in Curitiba, Southern Brazil. At the time of anamnesis, some questions were applied to know the possibility of these dogs having had contact with furniture and textile material which could shelter house dust mites. Sera samples were obtained and further analyzed by ELISA assay to measure serum IgE levels against these allergens with an established cut-off of 0.200 IgE optical density. RESULTS The allergen-specific IgE positivity against crudeD. farinae (92 %) and Zen 1 (77 %) was higher than Der f 2 (56 %). There was a correlation in sensitization to crude D. farinae and Zen 1 that was not observed between crude D. farinae and Der f 2 and Der f 2 and Zen 1. The sensitization to D. farinae and its allergens was associated with an unrestricted exposition to furniture and textile material. CONCLUSION & CLINICAL RELEVANCE: dogs with atopic dermatitis are frequently sensitized to D. farinae and its allergens, Der f 2 and Zen 1, may be considered major allergens in these dogs. Zen 1 may be the main allergen responsible for the sensitization to crude D. farinae.
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Affiliation(s)
- L Ludwig
- Department of Veterinary Medicine, School of Life and Sciences, Pontifical Catholic University of Paraná, 1155 Imaculada Conceição Street, 80215901, Curitiba, PR, Brazil.
| | - T Tsukui
- Central Research Laboratory, ZENOAQ, 1-1 Tairanoue, Sasagawa, Asaka-machi, Koriyama, Fukushima, 963-0196, Japan
| | - M Kageyama
- Central Research Laboratory, ZENOAQ, 1-1 Tairanoue, Sasagawa, Asaka-machi, Koriyama, Fukushima, 963-0196, Japan
| | - M Farias
- Department of Veterinary Medicine, School of Life and Sciences, Pontifical Catholic University of Paraná, 1155 Imaculada Conceição Street, 80215901, Curitiba, PR, Brazil; Dermatovet Veterinary Clinic, 85 Carmelo Rangel Street, 80440050, Curitiba, PR, Brazil
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37
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Abu Khweek A, Kim E, Joldrichsen MR, Amer AO, Boyaka PN. Insights Into Mucosal Innate Immune Responses in House Dust Mite-Mediated Allergic Asthma. Front Immunol 2020; 11:534501. [PMID: 33424827 PMCID: PMC7793902 DOI: 10.3389/fimmu.2020.534501] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 09/01/2020] [Indexed: 01/09/2023] Open
Abstract
The prevalence of asthma has been rising steadily for several decades, and continues to be a major public health and global economic burden due to both direct and indirect costs. Asthma is defined as chronic heterogeneous inflammatory diseases characterized by airway obstruction, mucus production and bronchospasm. Different endotypes of asthma are being recognized based on the distinct pathophysiology, genetic predisposition, age, prognosis, and response to remedies. Mucosal innate response to environmental triggers such as pollen, cigarette smoke, fragrances, viral infection, and house dust mite (HDM) are now recognized to play an important role in allergic asthma. HDM are the most pervasive allergens that co-habitat with us, as they are ubiquitous in-house dusts, mattress and bedsheets, and feed on a diet of exfoliated human skin flakes. Dermatophagoides pteronyssinus, is one among several HDM identified up to date. During the last decade, extensive studies have been fundamental in elucidating the interactions between HDM allergens, the host immune systems and airways. Moreover, the paradigm in the field of HDM-mediated allergy has been shifted away from being solely a Th2-geared to a complex response orchestrated via extensive crosstalk between the epithelium, professional antigen presenting cells (APCs) and components of the adaptive immunity. In fact, HDM have several lessons to teach us about their allergenicity, the complex interactions that stimulate innate immunity in initiating and perpetuating the lung inflammation. Herein, we review main allergens of Dermatophagoides pteronyssinus and their interactions with immunological sentinels that promote allergic sensitization and activation of innate immunity, which is critical for the development of the Th2 biased adaptive immunity to HDM allergens and development of allergic asthma.
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Affiliation(s)
- Arwa Abu Khweek
- Department of Biology and Biochemistry, Birzeit University, Birzeit, Palestine.,Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, United States.,Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, United States
| | - Eunsoo Kim
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, United States
| | - Marisa R Joldrichsen
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, United States
| | - Amal O Amer
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, United States.,The Infectious Diseases Institute, The Ohio State University, Columbus, OH, United States
| | - Prosper N Boyaka
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, United States.,Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, United States.,The Infectious Diseases Institute, The Ohio State University, Columbus, OH, United States
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38
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Avoidance of allergens as an environmental method in the prevention of inhaled allergy symptoms. Allergol Immunopathol (Madr) 2020; 48:745-752. [PMID: 31879043 DOI: 10.1016/j.aller.2019.06.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Accepted: 06/25/2019] [Indexed: 11/20/2022]
Abstract
Asthma and other inhaled allergies are some of the most common paediatric diseases. The association of exposure to allergens with induction and exacerbation of symptoms has been proven. The majority of allergens are permanently or periodically suspended in the air, which leads to impaired quality of life for sensitive patients. Therefore, many methods of prevention and therapy of allergic diseases have been developed. The method of allergen exposure avoidance is often the first and the most significant measure. The present research has been conducted to evaluate, based on scientific data, which measures have the most reliable evidence of effectiveness. Environmental allergen avoidance methods, despite limited evidence supporting their clinical efficacy, are listed as the main therapeutic approaches in most recommendations. The significance of the holistic approach is also emphasised: only simultaneous introduction of several avoidance methods can bring possibly beneficial effects for the patient.
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39
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Zhang R, Trower J, Wu T. Degradation of bacterial permeability family member A1 (BPIFA1) by house dust mite (HDM) cysteine protease Der p 1 abrogates immune modulator function. Int J Biol Macromol 2020; 164:4022-4031. [PMID: 32890564 PMCID: PMC7467078 DOI: 10.1016/j.ijbiomac.2020.08.214] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 08/19/2020] [Accepted: 08/28/2020] [Indexed: 01/01/2023]
Abstract
Bacterial permeability family member A1 (BPIFA1) is one of the most abundant proteins present in normal airway surface liquid (ASL). It is known to be diminished in asthmatic patients' sputum, which causes airway hyperresponsiveness (AHR). What is currently unclear is how environmental factors, such as allergens' impact on BPIFA1's abundance and functions in the context of allergic asthma. House dust mite (HDM) is a predominant domestic source of aeroallergens. The group of proteases found in HDM is thought to cleave multiple cellular protective mechanisms, and therefore foster the development of allergic asthma. Here, we show that BPIFA1 is cleaved by HDM proteases in a time-, dose-, and temperature-dependent manner. We have also shown the main component in HDM that is responsible for BPIFA1's degradation is Der p1. Fragmented BPIFA1 failed to bind E. coli lipopolysaccharide (LPS), and hence elevated TNFα and IL-6 secretion in human whole blood. BPIFA1 degradation is also observed in vivo in bronchoalveolar fluid (BALF) of mice which are intranasally instilled with HDM. These data suggest that proteases associated with environmental allergens such as HDM cleave BPIFA1 and therefore impair its immune modulator function.
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Affiliation(s)
- Rui Zhang
- Department of Respiratory and Critical Care Medicine, General Hospital of Ningxia Medical University, Ningxia Medical University, Yinchuan, PR China
| | - Jessika Trower
- Department of Pharmaceutical Sciences, 302 East Lawson Street, North Carolina Central University, Durham, NC 27707, USA
| | - Tongde Wu
- Department of Pharmaceutical Sciences, 302 East Lawson Street, North Carolina Central University, Durham, NC 27707, USA; Biomanufacturing Research Institute & Technology Enterprise (BRITE), 302 East Lawson Street, North Carolina Central University, Durham, NC 27707, USA.
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40
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González-Pérez R, Poza-Guedes P, Pineda F, Castillo M. Depiction of Major Mite Allergens in Severe Allergic Rhinitis with High Mite Perennial Exposure. Turk Arch Otorhinolaryngol 2020; 58:155-162. [PMID: 33145499 DOI: 10.5152/tao.2020.5365] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Accepted: 08/25/2020] [Indexed: 11/22/2022] Open
Abstract
Objective Airway diseases, including allergic rhinitis, are prompted by specific IgE antibodies against airborne allergens and notably those derived from mites. The presented study focused on the specific IgE immediate response to Dermatophagoides pteronyssinus (D. pteronyssinus) mite major allergens and the corresponding pertinence of molecular diagnosis in patients bothered with severe persistent rhinitis. Methods Individuals exhibiting confirmed sensitization to D. pteronyssinus along with a clinical diagnosis of coexisting severe allergic rhinitis were included in the study. In vivo investigations encompassed intradermal testing with a battery of standardized allergenic extracts, concurrent with in vitro specific IgE to the crude extract of D. pteronyssinus, and associated individual molecular allergens were assessed. Results Fifty-five out of 59 subjects showed serodominant IgE responses to the major allergens Der p 1, Der p 2 and Der p 23. Both Der p 2 and Der p 23 reached a prevalence above 80%, while group 10 allergen tropomyosin was scarcely depicted (<10%) and exclusively present in younger individuals. Conclusion The proposed component-resolved diagnosis panel accurately recognized 93.22% of D. pteronyssinus allergic patients. The raised seroprevalence of IgE response to Der p 23 also confirmed this constituent as a major D. pteronyssinus allergen in severe allergic rhinitis. A molecular approach appears to be essential to frame a more precise diagnosis and eventually a personalized immunotherapy regarding this allergic condition.
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Affiliation(s)
- Ruperto González-Pérez
- Department of Allergy & Severe Asthma Unit, Hospital Universitario de Canarias, Tenerife, Spain
| | - Paloma Poza-Guedes
- Department of Allergy & Severe Asthma Unit, Hospital Universitario de Canarias, Tenerife, Spain
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Bumbacea RS, Corcea SL, Ali S, Dinica LC, Fanfaret IS, Boda D. Mite allergy and atopic dermatitis: Is there a clear link? (Review). Exp Ther Med 2020; 20:3554-3560. [PMID: 32905207 DOI: 10.3892/etm.2020.9120] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 07/23/2020] [Indexed: 12/18/2022] Open
Abstract
Atopic dermatitis (AD) represents a widespread chronic skin disease associated with different atopic disorders and allergies. These associations, similar to overall AD pathophysiology, are entangled, multifactorial and they are yet to be clarified. IgE and non IgE mediated pathomechanisms appear to be implicated in AD. Allergens constitute key aspects in AD pathogenesis, as they may serve as trigger factors. This review emphasizes mainly house dust mites (HDM), as they are likely the most relevant airborne allergen for AD. Here we review in a concise form the mite allergens, the role of molecular diagnosis and the treatment strategies for HDM. Strategies of avoiding allergens, with a few exceptions, are not enough to control children's AD; recent studies show HDM avoidance procedures in diagnosed AD are insufficient. Regardless, some guidelines acknowledge the benefit of mattress and pillow covers in patients with dust mite sensitization that are unresponsive to optimal AD management. Most clinical trials investigating allergen-specific immunotherapy (AIT) as a potential treatment for AD were done with adult patients; a scarce number of studies looked into the efficacy of AIT as a treatment option in children suffering from AD, with conflicting data among them. One of the most feasible of these studies showed significant improvement of AD outcomes only in the mild/moderate group, but not in the severe group. Uncontrolled studies are hard to interpret, considering the natural history of remitting and relapsing of AD, in many of the patients, without clinical interventions. More AIT studies, especially pediatric studies, are required in order to either prove the reproducibility of positive results or to deny its effectiveness.
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Affiliation(s)
- Roxana Silvia Bumbacea
- Department of Allergy, 'Dr. Carol Davila' Nefrology Clinical Hospital, 010731 Bucharest, Romania.,Department of Allergy, 'Carol Davila' University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Sabina Loredana Corcea
- Department of Physiopathology and Immunology, 'Carol Davila' University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Selda Ali
- Department of Allergy, 'Dr. Carol Davila' Nefrology Clinical Hospital, 010731 Bucharest, Romania.,Department of Allergy, 'Carol Davila' University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Laura Cristina Dinica
- Department of Allergy, 'Dr. Carol Davila' Nefrology Clinical Hospital, 010731 Bucharest, Romania
| | - Ioan Serban Fanfaret
- Department of Pediatrics, Centre Hospitalier Régional d'Orléans, 45100 Orléans, France
| | - Daniel Boda
- Dermatology Research Laboratory, 'Carol Davila' University of Medicine and Pharmacy, 050474 Bucharest, Romania.,Carol Medical Center, 010626 Bucharest, Romania
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Abstract
PURPOSE OF REVIEW Mites are the most worldwide spread allergens and relevant causative of respiratory allergies. Life cycle, component allergens, biological activity and immunogenicity are discussed in depth. RECENT FINDINGS It is now known that mite allergens are able to stimulate the innate immune system through different receptors, for example, TLRs and PARs. The activation of the cells in the airway mucosa is followed by type 2 polarizing cytokine production in predisposed individuals. This complex network plays a pivotal role into the promotion of Th2 differentiation. SUMMARY This is a comprehensive review regarding all the mite allergens known so far, including their location within dust mites, composition, biological activities and binding receptors relevant to the fate of the immunological response.
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Boonpiyathad T, Pradubpongsa P, Mitthamsiri W, Satitsuksanoa P, Jacquet A, Sangasapaviliya A. Allergen-specific immunotherapy boosts allergen-specific IgD production in house dust mite-sensitized asthmatic patients. Allergy 2020; 75:1457-1460. [PMID: 31769883 DOI: 10.1111/all.14133] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 11/08/2019] [Accepted: 11/21/2019] [Indexed: 12/27/2022]
Affiliation(s)
- Tadech Boonpiyathad
- Division of Allergy and Clinical Immunology Department of Medicine Phramongkutklao Hospital and Phramongkutklao College of Medicine Bangkok Thailand
| | - Panitan Pradubpongsa
- Division of Allergy and Clinical Immunology Department of Medicine Phramongkutklao Hospital and Phramongkutklao College of Medicine Bangkok Thailand
| | - Wat Mitthamsiri
- Division of Allergy and Clinical Immunology Department of Medicine Phramongkutklao Hospital and Phramongkutklao College of Medicine Bangkok Thailand
| | | | - Alain Jacquet
- Faculty of Medicine Center of Excellence in Vaccine Research and Development Chulalongkorn University Bangkok Thailand
| | - Atik Sangasapaviliya
- Division of Allergy and Clinical Immunology Department of Medicine Phramongkutklao Hospital and Phramongkutklao College of Medicine Bangkok Thailand
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Alvaro-Lozano M, Akdis CA, Akdis M, Alviani C, Angier E, Arasi S, Arzt-Gradwohl L, Barber D, Bazire R, Cavkaytar O, Comberiati P, Dramburg S, Durham SR, Eifan AO, Forchert L, Halken S, Kirtland M, Kucuksezer UC, Layhadi JA, Matricardi PM, Muraro A, Ozdemir C, Pajno GB, Pfaar O, Potapova E, Riggioni C, Roberts G, Rodríguez Del Río P, Shamji MH, Sturm GJ, Vazquez-Ortiz M. EAACI Allergen Immunotherapy User's Guide. Pediatr Allergy Immunol 2020; 31 Suppl 25:1-101. [PMID: 32436290 PMCID: PMC7317851 DOI: 10.1111/pai.13189] [Citation(s) in RCA: 146] [Impact Index Per Article: 36.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Allergen immunotherapy is a cornerstone in the treatment of allergic children. The clinical efficiency relies on a well-defined immunologic mechanism promoting regulatory T cells and downplaying the immune response induced by allergens. Clinical indications have been well documented for respiratory allergy in the presence of rhinitis and/or allergic asthma, to pollens and dust mites. Patients who have had an anaphylactic reaction to hymenoptera venom are also good candidates for allergen immunotherapy. Administration of allergen is currently mostly either by subcutaneous injections or by sublingual administration. Both methods have been extensively studied and have pros and cons. Specifically in children, the choice of the method of administration according to the patient's profile is important. Although allergen immunotherapy is widely used, there is a need for improvement. More particularly, biomarkers for prediction of the success of the treatments are needed. The strength and efficiency of the immune response may also be boosted by the use of better adjuvants. Finally, novel formulations might be more efficient and might improve the patient's adherence to the treatment. This user's guide reviews current knowledge and aims to provide clinical guidance to healthcare professionals taking care of children undergoing allergen immunotherapy.
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Affiliation(s)
| | - Cezmi A Akdis
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland.,Christine Kühne-Center for Allergy Research and Education, Davos, Switzerland
| | - Mubeccel Akdis
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
| | - Cherry Alviani
- The David Hide Asthma and Allergy Research Centre, St Mary's Hospital, Newport, Isle of Wight, UK.,Clinical and Experimental Sciences and Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, UK.,NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Elisabeth Angier
- Primary Care and Population Sciences, University of Southampton, Southampton, UK
| | - Stefania Arasi
- Pediatric Allergology Unit, Department of Pediatric Medicine, Bambino Gesù Children's research Hospital (IRCCS), Rome, Italy
| | - Lisa Arzt-Gradwohl
- Department of Dermatology and Venerology, Medical University of Graz, Graz, Austria
| | - Domingo Barber
- School of Medicine, Institute for Applied Molecular Medicine (IMMA), Universidad CEU San Pablo, Madrid, Spain.,RETIC ARADYAL RD16/0006/0015, Instituto de Salud Carlos III, Madrid, Spain
| | - Raphaëlle Bazire
- Allergy Department, Hospital Infantil Niño Jesús, ARADyAL RD16/0006/0026, Madrid, Spain
| | - Ozlem Cavkaytar
- Department of Paediatric Allergy and Immunology, Faculty of Medicine, Goztepe Training and Research Hospital, Istanbul Medeniyet University, Istanbul, Turkey
| | - Pasquale Comberiati
- Department of Clinical Immunology and Allergology, I.M. Sechenov First Moscow State Medical University, Moscow, Russia.,Department of Clinical and Experimental Medicine, Section of Paediatrics, University of Pisa, Pisa, Italy
| | - Stephanie Dramburg
- Department of Pediatric Pneumology, Immunology and Intensive Care Medicine, Charité Medical University, Berlin, Germany
| | - Stephen R Durham
- Immunomodulation and Tolerance Group; Allergy and Clinical Immunology, Section of Inflammation, Repair and Development, National Heart and Lung Institute, Imperial College London, London, UK.,the MRC & Asthma UK Centre in Allergic Mechanisms of Asthma, London, UK
| | - Aarif O Eifan
- Allergy and Clinical Immunology, National Heart and Lung Institute, Imperial College London and Royal Brompton Hospitals NHS Foundation Trust, London, UK
| | - Leandra Forchert
- Department of Pediatric Pneumology, Immunology and Intensive Care Medicine, Charité Medical University, Berlin, Germany
| | - Susanne Halken
- Hans Christian Andersen Children's Hospital, Odense University Hospital, Odense, Denmark
| | - Max Kirtland
- Immunomodulation and Tolerance Group, Allergy and Clinical Immunology, Inflammation, Repair and Development, National Heart and Lung Institute, Asthma UK Centre in Allergic Mechanisms of Asthma, Imperial College London, London, UK
| | - Umut C Kucuksezer
- Aziz Sancar Institute of Experimental Medicine, Department of Immunology, Istanbul University, Istanbul, Turkey
| | - Janice A Layhadi
- Immunomodulation and Tolerance Group; Allergy and Clinical Immunology, Section of Inflammation, Repair and Development, National Heart and Lung Institute, Imperial College London, London, UK.,the MRC & Asthma UK Centre in Allergic Mechanisms of Asthma, London, UK.,Immunomodulation and Tolerance Group, Allergy and Clinical Immunology, Inflammation, Repair and Development, National Heart and Lung Institute, Asthma UK Centre in Allergic Mechanisms of Asthma, Imperial College London, London, UK
| | - Paolo Maria Matricardi
- Department of Pediatric Pneumology, Immunology and Intensive Care Medicine, Charité Medical University, Berlin, Germany
| | - Antonella Muraro
- The Referral Centre for Food Allergy Diagnosis and Treatment Veneto Region, Department of Women and Child Health, University of Padua, Padua, Italy
| | - Cevdet Ozdemir
- Institute of Child Health, Department of Pediatric Basic Sciences, Istanbul University, Istanbul, Turkey.,Faculty of Medicine, Department of Pediatrics, Division of Pediatric Allergy and Immunology, Istanbul University, Istanbul, Turkey
| | | | - Oliver Pfaar
- Department of Otorhinolaryngology, Head and Neck Surgery, Section of Rhinology and Allergy, University Hospital Marburg, Philipps-Universität Marburg, Marburg, Germany
| | - Ekaterina Potapova
- Department of Pediatric Pneumology, Immunology and Intensive Care Medicine, Charité Medical University, Berlin, Germany
| | - Carmen Riggioni
- Pediatric Allergy and Clinical Immunology Service, Institut de Reserca Sant Joan de Deú, Barcelona, Spain
| | - Graham Roberts
- The David Hide Asthma and Allergy Research Centre, St Mary's Hospital, Newport, Isle of Wight, UK.,NIHR Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton, UK.,Paediatric Allergy and Respiratory Medicine (MP803), Clinical & Experimental Sciences & Human Development in Health Academic Units University of Southampton Faculty of Medicine & University Hospital Southampton, Southampton, UK
| | | | - Mohamed H Shamji
- Immunomodulation and Tolerance Group; Allergy and Clinical Immunology, Section of Inflammation, Repair and Development, National Heart and Lung Institute, Imperial College London, London, UK.,the MRC & Asthma UK Centre in Allergic Mechanisms of Asthma, London, UK
| | - Gunter J Sturm
- Department of Dermatology and Venerology, Medical University of Graz, Graz, Austria
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Tamagawa-Mineoka R, Katoh N. Atopic Dermatitis: Identification and Management of Complicating Factors. Int J Mol Sci 2020; 21:E2671. [PMID: 32290423 PMCID: PMC7215488 DOI: 10.3390/ijms21082671] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 04/09/2020] [Accepted: 04/10/2020] [Indexed: 12/23/2022] Open
Abstract
Atopic dermatitis (AD) is a chronic relapsing inflammatory skin disease, associated with impaired skin barrier function and an atopic background. Various complicating factors, such as irritants, aeroallergens, food, microbial organisms, contact allergens, sweat, and scratching can induce the development of AD symptoms. Irritants, including soap/shampoo and clothes, can cause itching and eczematous lesions. In addition, young children with AD tend to become sensitized to eggs, milk, or peanuts, while older children and adults more often become sensitized to environmental allergens, such as house dust mites (HDM), animal dander, or pollen. Serum-specific IgE levels and skin prick test reactions to food tend to show high negative predictive values and low specificity and positive predictive values for diagnosing food allergy. On the other hand, AD adult patients tend to have severe skin symptoms and exhibit high HDM-specific IgE levels. Microbial organisms, e.g., Staphylococcus aureus and Malassezia furfur, might contribute to the pathogenetic mechanisms of AD. While sweat plays a major role in maintaining skin homeostasis, it can become an aggravating factor in patients with AD. Furthermore, scratching often exacerbates eczematous lesions. Several patient-specific complicating factors are seen in most cases. The identification and management of complicating factors are important for controlling AD.
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Affiliation(s)
- Risa Tamagawa-Mineoka
- Department of Dermatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan;
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Castro-Almarales RL, Ronquillo-Díaz M, Álvarez-Castelló M, Rodríguez-Canosa J, González-León M, Enríquez-Domínguez I, Navarro-Viltre BI, Mateo-Morejón M, Oliva-Díaz Y, Ramírez-González W, Cox L, Labrada-Rosado A. Subcutaneous allergen immunotherapy for asthma: A randomized, double-blind, placebo-controlled study with a standardized Blomia tropicalis vaccine. World Allergy Organ J 2020; 13:100098. [PMID: 32308779 PMCID: PMC7155230 DOI: 10.1016/j.waojou.2020.100098] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 11/14/2019] [Accepted: 11/22/2019] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Sensitization to Blomia tropicalis (Bt) is very frequent in the tropics, and particularly in Cuba, being a significant cause of allergic asthma. Allergen immunotherapy (AIT) with Bt can be a therapeutic option, however, placebo-controlled clinical trials have not been reported. OBJECTIVE To assess the therapeutic effect and safety of AIT for asthma using a standardized allergen vaccine of B. tropicalis by subcutaneous route, in allergic asthmatic patients exposed and sensitized to this mite species. METHODS A double-blind, placebo-controlled Phase II trial was conducted in 35 adults (18 with treatment and 17 with placebo), with mild to moderate asthma, predominantly sensitized to Bt. AIT was administered subcutaneously in increasing doses from 4 to 6000 Biological Units using a locally manufactured standardized extract (BIOCEN, Cuba). Patient assessment was performed using symptom-medication score (SMS), peak expiratory flow and skin reactivity relative to Histamine as measured by skin prick test (SPT). RESULTS The 12-month treatment achieved a significant (p < 0.001) decrease of SMS. Symptom score showed only 41% (CI: 26-61) of placebo values, whereas medication was 34.5% (22.4%-63.3%). Treatment was regarded clinically effective in 67% of patients (OR 32; 95%CI: 17 to 102). The effect size on symptoms and medication was higher than has been reported with equivalent allergen dosages of D. pteronyssinus and D. siboney in Cuban asthmatic patients. Skin reactivity to Bt was also significantly reduced (p = 0.0001), increasing 148-fold the allergen threshold to elicit a positive skin test. This desensitization effect was specific to Bt and did not modify the reactivity to Dermatophagoides. The change of specific skin reactivity was significantly (p < 0.05) correlated to clinical improvement. All adverse events were local with a frequency of 2.4% of injections. CONCLUSIONS Subcutaneous AIT with Blomia tropicalis was effective and safe in asthmatic adults exposed and sensitized to this mite species in a tropical environment. TRIAL REGISTRATION Cuban Public Registry of Clinical Trials: RPCEC00000026 (WHO International Clinical Trial Registry Platform ICTRP).
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Key Words
- AIT, Allergen immunotherapy
- ALK, Denmark-based pharmaceutical company
- BIOCEN, National Center of Bioproducts
- BU, Biological Units
- BU/mL, Biological units per milliliter
- Blo t, Mayor allegen of Blomia tropicalis
- Blomia tropicalis
- Bt, Blomia tropicalis or B. tropicalis
- CECMED, Center for State Control of Drugs, Equipment and Medical Devices
- Ch10, Allergen specific reactivity calculated relative to the Histamine HC 10 mg/mL
- Clinical trial
- Dp or D, pteronyssinus: Dermatophagoides pteronyssinus
- Ds or D, siboney: Dermatophagoides siboney
- HDM SCIT, Immunotherpy Subcutaneous with allergens of House Dust Mite
- HDM, House Dust Mite
- OCI, Overall clinical improvement
- PEF, Peak Expiratory Flow
- SM, Symptom and Medication
- SMD, Standard Mean Difference
- Standardized allergen extract
- Subcutaneous immunotherapy
- VALERGEN-BT, Standardized allergen extract of Blomia tropicalis
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Affiliation(s)
- Raúl Lázaro Castro-Almarales
- Second Degree Specialist in Allergy and Integral General Medicine, Master in Transmissible Diseases, Auxiliary Professor, “General Calixto García” University Hospital, Havana University of Medical Science. Auxiliary Researcher, National Center of Bioproducts, Bejucal, Mayabeque, Cuba
| | - Mercedes Ronquillo-Díaz
- Second Degree Specialist in Allergy, Master in Occupational Health, Auxiliary Professor, “General Calixto García” University Hospital, Allergy and Immunology Service, Havana University of Medical Science, Cuba
| | - Mirta Álvarez-Castelló
- Second Degree Specialist in Allergy, Auxiliary Professor and Researcher, “General Calixto García” University Hospital, Allergy and Immunology Service, Havana University of Medical Science, Cuba
| | - José Rodríguez-Canosa
- Second Degree Specialist in Allergy, Master in Transmissible Diseases, Auxiliary Professor, “General Calixto García” University Hospital, Allergy and Immunology Service, Havana University of Medical Science, Cuba
| | - Mayda González-León
- Second Degree Specialist in Integral General Medicine, Master in Natural and Traditional Medicine, Teaching Polyclinic “Pedro Fonseca Álvarez”, Havana, Cuba
| | - Irene Enríquez-Domínguez
- First Degree Specialist in Allergy and Integral General Medicine, Master in Child Integral Care, “General Calixto García” University Hospital, Allergy and Immunology Service, Havana, Cuba
| | | | - Maytee Mateo-Morejón
- Master in Biotechnology, National Center of Bioproducts, Allergens Department, Bejucal, Mayabeque, Cuba
| | - Yunia Oliva-Díaz
- National Center of Bioproducts, Allergen Department, Bejucal, Mayabeque, Cuba
| | - Wendy Ramírez-González
- Master in Biochemistry, National Center of Bioproducts, Allergens Department, Bejucal, Mayabeque, Cuba
| | - Linda Cox
- Allergy & Asthma Center, Fort Lauderdale, Florida, USA
| | - Alexis Labrada-Rosado
- Full Researcher, Research and Development Director, National Center of Bioproducts, Bejucal, Mayabeque, Cuba
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Xiong Q, Wan ATY, Tsui SKW. A Mini-review of the Genomes and Allergens of Mites and Ticks. Curr Protein Pept Sci 2020; 21:114-123. [DOI: 10.2174/1389203720666190719150432] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 06/18/2019] [Accepted: 06/21/2019] [Indexed: 12/20/2022]
Abstract
Mites and ticks are associated with many human diseases including allergic diseases and
scabies. With the recent advances in the high throughput DNA sequencing technology, many mitochondrial
nuclear genomes of these species have been sequenced and the resulting genomic resources
will certainly provide novel insights for the future investigation of the functionally important proteins
and peptides in these species. In this mini-review, the current situation of mite and tick genomes is
described and the future perspectives for the application of the genomic resources are discussed, especially
including the novel identification and structural analysis of allergens.
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Affiliation(s)
- Qing Xiong
- School of Biomedical Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Angel Tsz Yau Wan
- School of Biomedical Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong
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Antigenic cross-reactivity between Schistosoma mansoni and allergenic invertebrates putatively due to shared glycanic epitopes. Sci Rep 2020; 10:3350. [PMID: 32099050 PMCID: PMC7042331 DOI: 10.1038/s41598-020-59892-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 01/28/2020] [Indexed: 01/15/2023] Open
Abstract
Previous studies have shown that rabbit IgG antibodies against Schistosoma mansoni egg antigens (SmSEA) cross-react with allergens in natural rubber latex, peanuts and grass and tree pollens. Here we describe antigenic molecules that cross-react with rabbit anti-S. mansoni IgG antibodies in extracts of the house dust mite (HDM) Dermatophagoides farinae, the Australian cockroach (ACR) Periplaneta australasiae and in the venom of the honey bee Apis mellifera (HBV). Tandem mass spectrometry identified the cross-reactive allergens as Der f 15 in HDM, two homologues of the Periplaneta americana cockroach allergen Cr-PI/Per a 3 in ACR and two isoforms of the allergen Api m 1 (phospholipase A2: PLA2) in HBV. Cross-reactive rabbit anti-SmSEA IgG antibodies eluted from the three invertebrate allergens reacted with S. mansoni egg antigens and variably with schistosome cercarial and worm antigens. Treatment of the electroblotted allergens with sodium metaperiodate abrogated most of the cross-reactivity of the rabbit anti-SmSEA antibodies, suggesting it was due to cross-reactive carbohydrate determinants (CCDs). Furthermore, analyses of the allergens’ amino acid sequences indicated that they had potential for both N- and O-linked glycosylation. A potential role for the CCDs shared by the schistosome and invertebrates in inducing an allergy-protective effect, as proposed by the hygiene hypothesis, is discussed.
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Silva ESD, Pinheiro CS, Pacheco LGC, Alcantara-Neves NM. Dermatophagoides spp. hypoallergens design: what has been achieved so far? Expert Opin Ther Pat 2020; 30:163-177. [PMID: 31913726 DOI: 10.1080/13543776.2020.1712360] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Introduction: Allergic illnesses are one of the most prevalent immunological disorders worldwide and house dust mites are important triggers of these diseases. Allergen-specific immunotherapy (AIT) is an alternative treatment to pharmacotherapy and among its technologies, recombinant hypoallergenic derivatives have shown promising features, turn them into safer and more efficient allergy vaccines.Areas covered: Patents and scientific publications referring to advances in the design of Dermatophagoides spp. hypoallergenic molecules. Data were obtained from the Espacenet® and PubMed websites, using different key terms, advanced tools and Boolean operators for searches. The retrieved data were then descriptively analyzed, taking into consideration clinical targets, geographical, temporal, collaborative, and different classification aspects of the productions.Expert opinion: Joint advances of molecular biology, genetic engineering, and bioinformatics technologies led to progresses in the design of Dermatophagoides spp. hypoallergenic derivatives. Collaborative networks seem to be an interesting way not only to improve technologies in AIT but also to boost the number of patents, publications, and grants for researchers. The observed trend for the use of hypoallergenic hybrid molecules was a fundamental AIT advance and this type of molecule appears to be a more attractive product for companies and more convenient, efficient, and safer allergy immunotherapy for patients.
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Affiliation(s)
- Eduardo Santos da Silva
- Laboratório de Alergia e Acarologia, Instituto de Ciências da Saúde, Universidade Federal da Bahia (UFBA), Salvador, Brazil.,Programa de Pós-Graduação em Imunologia (PPGIm-UFBA), Salvador, Brazil
| | - Carina Silva Pinheiro
- Laboratório de Alergia e Acarologia, Instituto de Ciências da Saúde, Universidade Federal da Bahia (UFBA), Salvador, Brazil
| | - Luis Gustavo Carvalho Pacheco
- Laboratório de Alergia e Acarologia, Instituto de Ciências da Saúde, Universidade Federal da Bahia (UFBA), Salvador, Brazil
| | - Neuza Maria Alcantara-Neves
- Laboratório de Alergia e Acarologia, Instituto de Ciências da Saúde, Universidade Federal da Bahia (UFBA), Salvador, Brazil.,Programa de Pós-Graduação em Imunologia (PPGIm-UFBA), Salvador, Brazil
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Erban T, Klimov P, Talacko P, Harant K, Hubert J. Proteogenomics of the house dust mite, Dermatophagoides farinae: Allergen repertoire, accurate allergen identification, isoforms, and sex-biased proteome differences. J Proteomics 2020; 210:103535. [DOI: 10.1016/j.jprot.2019.103535] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 08/28/2019] [Accepted: 09/26/2019] [Indexed: 12/15/2022]
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