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Głowacki A, Rybiński P, Czerwonka G, Żukowski W, Mirkhodjaev UZ, Żelezik M. Flammability, Toxicity, and Microbiological Properties of Polyurethane Flexible Foams. MATERIALS (BASEL, SWITZERLAND) 2024; 17:3517. [PMID: 39063810 PMCID: PMC11278372 DOI: 10.3390/ma17143517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2024] [Revised: 07/11/2024] [Accepted: 07/13/2024] [Indexed: 07/28/2024]
Abstract
The aim of the research was to investigate the influence of calcium phosphinate (HPCA) and aluminum phosphinate (HPAL) in synergistic systems with organophosphorus compounds, i.e., diphenylcresyl phosphate (CDP) and trichloropropyl phosphate (TCPP), on the thermal stability, flammability, smoke density, and emission of toxic gases during the thermal decomposition of polyurethane (PUR) foams. Thermogravimetric analysis (TGA), along with cone calorimetry and microcalorimetry, were used to assess the influence of fillers on the thermal stability and flammability of PUR foams. The analysis of toxic gas products was performed with the use of a coupled TG-gas analyzer system. The optical density of gases was measured with the use of a smoke density chamber (SDC). The obtained results showed an increase in thermal stability and a decrease in the flammability of the PUR composites. However, the results regarding smoke and gas emissions, as well as toxic combustion by-products, present ambiguity. On one hand, the applied flame retardant systems in the form of PUR-HPCA-CDP and PUR-HPCA-TCPP led to a reduction in the concentration of CO and HCN in the gas by-products. On the other hand, they clearly increased the concentration of CO2, NOx, and smoke emissions. Microbiological studies indicated that the obtained foam material is completely safe for use and does not exhibit biocidal properties.
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Affiliation(s)
- Arkadiusz Głowacki
- Institute of Chemistry, The Jan Kochanowski University, 25-406 Kielce, Poland
| | - Przemysław Rybiński
- Institute of Chemistry, The Jan Kochanowski University, 25-406 Kielce, Poland
| | - Grzegorz Czerwonka
- Institute of Biology, Jan Kochanowski University, 25-406 Kielce, Poland;
| | - Witold Żukowski
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31-155 Cracow, Poland;
| | | | - Monika Żelezik
- Institute of Geography and Environmental Sciences, Jan Kochanowski University, 25-406 Kielce, Poland;
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Đurašinović T, Lopandić Z, Protić-Rosić I, Ravnsborg T, Blagojević G, Burazer L, Jensen ON, Gavrović-Jankulović M. Utilizing the Banana S-Adenosyl-L-Homocysteine Hydrolase Allergen to Identify Cross-Reactive IgE in Ryegrass-, Latex-, and Kiwifruit-Allergic Individuals. Int J Mol Sci 2024; 25:5800. [PMID: 38891986 PMCID: PMC11171677 DOI: 10.3390/ijms25115800] [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: 04/16/2024] [Revised: 05/15/2024] [Accepted: 05/23/2024] [Indexed: 06/21/2024] Open
Abstract
Food allergies mediated by specific IgE (sIgE) have a significant socioeconomic impact on society. Evaluating the IgE cross-reactivity between allergens from different allergen sources can enable the better management of these potentially life-threatening adverse reactions to food proteins and enhance food safety. A novel banana fruit allergen, S-adenosyl-L-homocysteine hydrolase (SAHH), has been recently identified and its recombinant homolog was heterologously overproduced in E. coli. In this study, we performed a search in the NCBI (National Center for Biotechnology Information) for SAHH homologs in ryegrass, latex, and kiwifruit, all of which are commonly associated with pollen-latex-fruit syndrome. In addition, Western immunoblot analysis was utilized to identify the cross-reactive IgE to banana SAHH in the sera of patients with a latex allergy, kiwifruit allergy, and ryegrass allergy. ClustalOmega analysis showed more than 92% amino acid sequence identity among the banana SAHH homologs in ryegrass, latex, and kiwifruit. In addition to five B-cell epitopes, in silico analysis predicted eleven T-cell epitopes in banana SAHH, seventeen in kiwifruit SAHH, twelve in ryegrass SAHH, and eight in latex SAHH, which were related to the seven-allele HLA reference set (HLA-DRB1*03:01, HLA-DRB1*07:01, HLA-DRB1*15:01, HLA-DRB3*01:01, HLA-DRB3*02:02, HLA-DRB4*01:01, HLA-DRB5*01:01). Four T-cell epitopes were identical in banana and kiwifruit SAHH (positions 328, 278, 142, 341), as well as banana and ryegrass SAHH (positions 278, 142, 96, and 341). All four SAHHs shared two T-cell epitopes (positions 278 and 341). In line with the high amino acid sequence identity and B-cell epitope homology among the analyzed proteins, the cross-reactive IgE to banana SAHH was detected in three of three latex-allergic patients, five of six ryegrass-allergic patients, and two of three kiwifruit-allergic patients. Although banana SAHH has only been studied in a small group of allergic individuals, it is a novel cross-reactive food allergen that should be considered when testing for pollen-latex-fruit syndrome.
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Affiliation(s)
- Tatjana Đurašinović
- Institute of Medical Biochemistry, Military Medical Academy, 11000 Belgrade, Serbia;
| | - Zorana Lopandić
- Institute for Chemistry in Medicine, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia;
| | | | - Tina Ravnsborg
- Department of Biochemistry and Molecular Biology, University of South Denmark, 5230 Odense, Denmark
| | - Gordan Blagojević
- Institute of Virology, Vaccines and Sera “Torlak”, 11000 Belgrade, Serbia; (G.B.); (L.B.)
| | - Lidija Burazer
- Institute of Virology, Vaccines and Sera “Torlak”, 11000 Belgrade, Serbia; (G.B.); (L.B.)
| | - Ole N. Jensen
- Department of Biochemistry and Molecular Biology, University of South Denmark, 5230 Odense, Denmark
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Buraphaka H, Dobutr T, Wiese MD, Lopata AL, Daduang S. Structure-based epitope prediction and assessment of cross-reactivity of Myrmecia pilosula venom-specific IgE and recombinant Sol g proteins (Solenopsis geminata). Sci Rep 2024; 14:11145. [PMID: 38750087 PMCID: PMC11096326 DOI: 10.1038/s41598-024-61843-4] [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: 01/19/2024] [Accepted: 05/10/2024] [Indexed: 05/18/2024] Open
Abstract
The global distribution of tropical fire ants (Solenopsis geminata) raises concerns about anaphylaxis and serious medical issues in numerous countries. This investigation focused on the cross-reactivity of allergen-specific IgE antibodies between S. geminata and Myrmecia pilosula (Jack Jumper ant) venom proteins due to the potential emergence of cross-reactive allergies in the future. Antibody epitope analysis unveiled one predominant conformational epitope on Sol g 1.1 (PI score of 0.989), followed by Sol g 2.2, Sol g 4.1, and Sol g 3.1. Additionally, Pilosulin 1 showed high allergenic potential (PI score of 0.94), with Pilosulin 5a (PI score of 0.797) leading in B-cell epitopes. The sequence analysis indicated that Sol g 2.2 and Sol g 4.1 pose a high risk of cross-reactivity with Pilosulins 4.1a and 5a. Furthermore, the cross-reactivity of recombinant Sol g proteins with M. pilosula-specific IgE antibodies from 41 patients revealed high cross-reactivity for r-Sol g 3.1 (58.53%) and r-Sol g 4.1 (43.90%), followed by r-Sol g 2.2 (26.82%), and r-Sol g 1.1 (9.75%). Therefore, this study demonstrates cross-reactivity (85.36%) between S. geminata and M. pilosula, highlighting the allergenic risk. Understanding these reactions is vital for the prevention of severe allergic reactions, especially in individuals with pre-existing Jumper Jack ant allergy, informing future management strategies.
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Affiliation(s)
- Hathairat Buraphaka
- Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen, Thailand
- Protein and Proteomics Research Center for Commercial and Industrial Purposes (ProCCI), Khon Kaen University, Khon Kaen, Thailand
| | - Theerawat Dobutr
- Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen, Thailand
- Protein and Proteomics Research Center for Commercial and Industrial Purposes (ProCCI), Khon Kaen University, Khon Kaen, Thailand
- Department of Biomedical Sciences and Biomedical Engineering, Faculty of Medicine, Prince of Songkla University, Hat Yai, Thailand
| | - Michael D Wiese
- Centre for Pharmaceutical Innovation, UniSA: Clinical and Health Sciences, University of South Australia, Adelaide, Australia
| | - Andreas L Lopata
- Molecular Allergy Research Laboratory, Australian Institute of Tropical Health and Medicine, James Cook University AU, Townsville, Australia.
- Tropical Futures Institute, James Cook University SG, Singapore, Singapore.
| | - Sakda Daduang
- Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen, Thailand.
- Protein and Proteomics Research Center for Commercial and Industrial Purposes (ProCCI), Khon Kaen University, Khon Kaen, Thailand.
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Aud-in S, Juprasong Y, Pinkaew B, Talek K, Tantilipikorn P, Songnuan W. Incidence of grass and weed sensitization in Bangkok, Thailand: a clinical study. Front Public Health 2024; 12:1301095. [PMID: 38605873 PMCID: PMC11007029 DOI: 10.3389/fpubh.2024.1301095] [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: 09/24/2023] [Accepted: 03/15/2024] [Indexed: 04/13/2024] Open
Abstract
Background Allergic rhinitis (AR) is a prevalent public health concern globally, significantly impacting quality of life. In Thailand, the prevalence of AR is rising, with grass and weed pollen identified as primary outdoor triggers. Objectives This study aimed to (1) assess patterns of pollen sensitization in Thai AR patients and (2) investigate correlations between demographics/clinical data and SPT results. Methods A total of 121 individuals aged ≥18 years with clinically diagnosed AR were recruited. Skin prick testing (SPT) was performed using a panel of commonly encountered tropical grass and weed pollen extracts. SPT wheal sizes and clinical symptom scores were recorded. Correlations between SPT outcomes and symptom scores were analyzed. Results Among the participants, 104 (85.95%) exhibited positive SPT reactions to at least one pollen type. Nutsedge (76/121), para grass (57/121), and Bermuda grass (48/121) were the most frequently identified allergens. Hurricane grass elicited the strongest reaction, evidenced by the highest average wheal size (6.2 mm). Poly-sensitization was observed in 77 (63.6%) of the SPT-positive individuals, with most cases involving two different pollen extracts (35/77). Notably, AR severity positively correlated with both average wheal size and the number of positive SPT tests. Conclusion This study highlights nutsedge, para grass, and Bermuda grass as major allergenic pollen sources for Thai AR patients. Including nutsedge, hurricane grass, and careless weed in clinical SPT panels is recommended for improved diagnostic accuracy. Additionally, the positive correlation between AR severity and pollen reaction strength emphasizes the importance of implementing patient education and avoidance strategies.
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Affiliation(s)
- Sirirat Aud-in
- Department of Plant Science, Faculty of Science, Mahidol University, Bangkok, Thailand
- Systems Biology of Diseases Research Unit, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Yotin Juprasong
- Systems Biology of Diseases Research Unit, Faculty of Science, Mahidol University, Bangkok, Thailand
- Graduate Program in Toxicology, Faculty of Science, Mahidol University, Bangkok, Thailand
- Center of Excellence on Environmental Health and Toxicology (EHT), Office of the Permanent Secretary (OPS), Ministry of Higher Education, Science, Research and Innovation (MHESI), Bangkok, Thailand
- Department of Biochemistry, Faculty of Medicine, Srinakharinwirot University, Bangkok, Thailand
| | - Bannapuch Pinkaew
- Department of Otorhinolaryngology, Division of Rhinology and Allergy, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Kanokporn Talek
- Department of Otorhinolaryngology, Division of Rhinology and Allergy, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Pongsakorn Tantilipikorn
- Department of Otorhinolaryngology, Division of Rhinology and Allergy, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
- Center of Research Excellence in Allergy and Immunology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Wisuwat Songnuan
- Department of Plant Science, Faculty of Science, Mahidol University, Bangkok, Thailand
- Systems Biology of Diseases Research Unit, Faculty of Science, Mahidol University, Bangkok, Thailand
- Center of Excellence on Environmental Health and Toxicology (EHT), Office of the Permanent Secretary (OPS), Ministry of Higher Education, Science, Research and Innovation (MHESI), Bangkok, Thailand
- Center of Research Excellence in Allergy and Immunology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
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Giangrieco I, Ciardiello MA, Tamburrini M, Tuppo L, Mari A, Alessandri C. Plant and Arthropod IgE-Binding Papain-like Cysteine Proteases: Multiple Contributions to Allergenicity. Foods 2024; 13:790. [PMID: 38472904 DOI: 10.3390/foods13050790] [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: 01/15/2024] [Revised: 02/05/2024] [Accepted: 03/01/2024] [Indexed: 03/14/2024] Open
Abstract
Papain-like cysteine proteases are widespread and can be detected in all domains of life. They share structural and enzymatic properties with the group's namesake member, papain. They show a broad range of protein substrates and are involved in several biological processes. These proteases are widely exploited for food, pharmaceutical, chemical and cosmetic biotechnological applications. However, some of them are known to cause allergic reactions. In this context, the objective of this review is to report an overview of some general properties of papain-like cysteine proteases and to highlight their contributions to allergy reactions observed in humans. For instance, the literature shows that their proteolytic activity can cause an increase in tissue permeability, which favours the crossing of allergens through the skin, intestinal and respiratory barriers. The observation that allergy to PLCPs is mostly detected for inhaled proteins is in line with the reports describing mite homologs, such as Der p 1 and Der f 1, as major allergens showing a frequent correlation between sensitisation and clinical allergic reactions. In contrast, the plant food homologs are often digested in the gastrointestinal tract. Therefore, they only rarely can cause allergic reactions in humans. Accordingly, they are reported mainly as a cause of occupational diseases.
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Affiliation(s)
- Ivana Giangrieco
- Institute of Biosciences and BioResources (IBBR), National Research Council of Italy (CNR), 80131 Naples, Italy
| | | | - Maurizio Tamburrini
- Institute of Biosciences and BioResources (IBBR), National Research Council of Italy (CNR), 80131 Naples, Italy
| | - Lisa Tuppo
- Institute of Biosciences and BioResources (IBBR), National Research Council of Italy (CNR), 80131 Naples, Italy
| | - Adriano Mari
- Associated Centers for Molecular Allergology (CAAM), 00100 Rome, Italy
- Allergy Data Laboratories (ADL), 04100 Latina, Italy
| | - Claudia Alessandri
- Associated Centers for Molecular Allergology (CAAM), 00100 Rome, Italy
- Allergy Data Laboratories (ADL), 04100 Latina, Italy
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Wawrzeńczyk A, Rawicka E, Napiórkowska-Baran K, Alska E, Bartuzi Z. Cross-reactive aeroallergens – the main cause of food allergy. FOOD AGR IMMUNOL 2023. [DOI: 10.1080/09540105.2022.2133090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Affiliation(s)
- Adam Wawrzeńczyk
- Department of Allergology, Clinical Immunology and Internal Medicine, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, Bydgoszcz, Poland
| | - Emilia Rawicka
- Department of Allergology, Clinical Immunology and Internal Medicine, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, Bydgoszcz, Poland
| | - Katarzyna Napiórkowska-Baran
- Department of Allergology, Clinical Immunology and Internal Medicine, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, Bydgoszcz, Poland
| | - Ewa Alska
- Department of Allergology, Clinical Immunology and Internal Medicine, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, Bydgoszcz, Poland
| | - Zbigniew Bartuzi
- Department of Allergology, Clinical Immunology and Internal Medicine, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, Bydgoszcz, Poland
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Grewling Ł, Ribeiro H, Antunes C, Apangu GP, Çelenk S, Costa A, Eguiluz-Gracia I, Galveias A, Gonzalez Roldan N, Lika M, Magyar D, Martinez-Bracero M, Ørby P, O'Connor D, Penha AM, Pereira S, Pérez-Badia R, Rodinkova V, Xhetani M, Šauliene I, Skjøth CA. Outdoor airborne allergens: Characterization, behavior and monitoring in Europe. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 905:167042. [PMID: 37709071 DOI: 10.1016/j.scitotenv.2023.167042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 08/23/2023] [Accepted: 09/11/2023] [Indexed: 09/16/2023]
Abstract
Aeroallergens or inhalant allergens, are proteins dispersed through the air and have the potential to induce allergic conditions such as rhinitis, conjunctivitis, and asthma. Outdoor aeroallergens are found predominantly in pollen grains and fungal spores, which are allergen carriers. Aeroallergens from pollen and fungi have seasonal emission patterns that correlate with plant pollination and fungal sporulation and are strongly associated with atmospheric weather conditions. They are released when allergen carriers come in contact with the respiratory system, e.g. the nasal mucosa. In addition, due to the rupture of allergen carriers, airborne allergen molecules may be released directly into the air in the form of micronic and submicronic particles (cytoplasmic debris, cell wall fragments, droplets etc.) or adhered onto other airborne particulate matter. Therefore, aeroallergen detection strategies must consider, in addition to the allergen carriers, the allergen molecules themselves. This review article aims to present the current knowledge on inhalant allergens in the outdoor environment, their structure, localization, and factors affecting their production, transformation, release or degradation. In addition, methods for collecting and quantifying aeroallergens are listed and thoroughly discussed. Finally, the knowledge gaps, challenges and implications associated with aeroallergen analysis are described.
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Affiliation(s)
- Łukasz Grewling
- Laboratory of Aerobiology, Department of Systematic and Environmental Botany, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland.
| | - Helena Ribeiro
- Department of Geosciences, Environment and Spatial Plannings of the Faculty of Sciences, University of Porto and Earth Sciences Institute (ICT), Portugal
| | - Celia Antunes
- Department of Medical and Health Sciences, School of Health and Human Development & ICT-Institute of Earth Sciences, IIFA, University of Évora, 7000-671 Évora, Portugal
| | | | - Sevcan Çelenk
- Department of Biology, Faculty of Arts and Sciences, Bursa Uludag University, Bursa, Turkey
| | - Ana Costa
- Department of Medical and Health Sciences, School of Health and Human Development & ICT-Institute of Earth Sciences, IIFA, University of Évora, 7000-671 Évora, Portugal
| | - Ibon Eguiluz-Gracia
- Allergy Unit, Hospital Regional Universitario de Malaga, Malaga 29010, Spain
| | - Ana Galveias
- Department of Medical and Health Sciences, School of Health and Human Development & ICT-Institute of Earth Sciences, IIFA, University of Évora, 7000-671 Évora, Portugal
| | - Nestor Gonzalez Roldan
- Group of Biofunctional Metabolites and Structures, Priority Research Area Chronic Lung Diseases, Research Center Borstel, Leibniz Lung Center, Member of the German Center for Lung Research (DZL), Airway Research Center North (ARCN), Borstel, Germany; Pollen Laboratory, Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
| | - Mirela Lika
- Department of Biology, Faculty of Natural Sciences, University of Tirana, Tirana, Albania
| | - Donát Magyar
- National Center for Public Health and Pharmacy, Budapest, Hungary
| | | | - Pia Ørby
- Department of Environmental Science, Danish Big Data Centre for Environment and Health (BERTHA) Aarhus University, Aarhus, Denmark
| | - David O'Connor
- School of Chemical Sciences, Dublin City University, Dublin D09 E432, Ireland
| | - Alexandra Marchã Penha
- Water Laboratory, School of Sciences and Technology, ICT-Institute of Earth Sciences, IIFA, University of Évora. 7000-671 Évora, Portugal
| | - Sónia Pereira
- Department of Geosciences, Environment and Spatial Plannings of the Faculty of Sciences, University of Porto and Earth Sciences Institute (ICT), Portugal
| | - Rosa Pérez-Badia
- Institute of Environmental Sciences, University of Castilla-La Mancha, 45071 Toledo, Spain
| | | | - Merita Xhetani
- Department of Biology, Faculty of Natural Sciences, University of Tirana, Tirana, Albania
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Schnabel CL, Jentsch MC, Lübke S, Kaiser-Thom S, Gerber V, Vrtala S, Huang HJ, Rhyner C, Wagner B, Hoffmann R, Volke D. Immunoproteomics reveal increased serum IgG3/5 binding to Dermatophagoides and yeast protein antigens in severe equine asthma in a preliminary study. Front Immunol 2023; 14:1293684. [PMID: 38162673 PMCID: PMC10754955 DOI: 10.3389/fimmu.2023.1293684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 11/21/2023] [Indexed: 01/03/2024] Open
Abstract
Introduction Severe equine asthma (SEA) is a common, chronic respiratory disease of horses characterized by hyperreactivity to hay dust which has many similarities to severe neutrophilic asthma in humans. SEA-provoking antigens have not been comprehensively characterized, but molds and mites have been suggested as relevant sources. Here, we identified relevant antigen candidates using immunoproteomics with IgG isotype-binding analyses. Methods Proteins from Dermatophagoides pteronyssinus (Der p) were separated by two-dimensional gel electrophoresis followed by immunoblotting (2D immunoblots) resulting in a characteristic pattern of 440 spots. After serum incubation, antibody (Ig)-binding of all Ig (Pan-Ig) and IgG isotypes (type-2-associated IgG3/5, type-1-associated IgG4/7) was quantified per each spot and compared between asthmatic and healthy horses' sera (n=5 per group). Results Ig binding differences were detected in 30 spots. Pan-Ig binding was higher with asthmatics compared to healthy horses' sera on four spots, and IgG3/5 binding was higher on 18 spots. Small IgG4/7 binding differences were detected on 10 spots with higher binding with asthmatics' sera on four but higher binding with healthy horses' sera on six spots. Proteins from the spots with group differences including mite and yeast proteins were identified by liquid chromatography mass spectrometry. The latter likely originated from the feeding substrate of the Der p culture. Prioritized antigen candidates amongst the proteins identified were Der p 1, Der p 11, group 15 allergens, myosin heavy chain, and uncharacterized Der p proteins. Additionally, yeast enolases, alcohol dehydrogenase (ADH), phosphoglycerate kinase (PGK), glyceraldehyde-3-phosphate dehydrogenase, and heat shock proteins were prioritized. Eleven antigen candidates were tested for confirmation by ELISAs using the respective proteins separately. Differences in asthmatics vs. healthy horses' serum Ig binding to Der p 1, Der p 18, and three yeast enzymes (enolase, ADH, and PGK) confirmed these as promising antigens of immune responses in SEA. Discussion Antigens with relevance in SEA were newly identified by immunoproteomics, and yeast antigens were considered for SEA for the first time. Serum IgG3/5 binding to relevant antigens was increased in SEA and is a novel feature that points to increased type-2 responses in SEA but requires confirmation of the corresponding cellular responses.
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Affiliation(s)
- Christiane L. Schnabel
- Institute of Immunology, Faculty of Veterinary Medicine, and Center for Biotechnology and Biomedicine, Leipzig University, Leipzig, Germany
| | - Maria-Christin Jentsch
- Institute of Immunology, Faculty of Veterinary Medicine, and Center for Biotechnology and Biomedicine, Leipzig University, Leipzig, Germany
| | - Sabrina Lübke
- Institute of Immunology, Faculty of Veterinary Medicine, and Center for Biotechnology and Biomedicine, Leipzig University, Leipzig, Germany
| | - Sarah Kaiser-Thom
- Swiss Institute of Equine Medicine (ISME), Department of Clinical Veterinary Medicine, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Vinzenz Gerber
- Swiss Institute of Equine Medicine (ISME), Department of Clinical Veterinary Medicine, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Susanne Vrtala
- Division of Immunopathology, Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Huey-Jy Huang
- Division of Immunopathology, Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Claudio Rhyner
- Christine Kühne Center for Allergy, Research, and Education (CK-CARE), Davos, Switzerland
- Swiss Institute of Allergy and Asthma Research (SIAF), Davos, Switzerland
| | - Bettina Wagner
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, United States
| | - Ralf Hoffmann
- Institute of Bioanalytical Chemistry, Faculty of Chemistry and Mineralogy and Center for Biotechnology and Biomedicine, Leipzig University, Leipzig, Germany
| | - Daniela Volke
- Institute of Bioanalytical Chemistry, Faculty of Chemistry and Mineralogy and Center for Biotechnology and Biomedicine, Leipzig University, Leipzig, Germany
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Moten D, Batsalova T, Apostolova D, Mladenova T, Dzhambazov B, Teneva I. In Silico Design of a New Epitope-Based Vaccine against Grass Group 1 Allergens. Adv Respir Med 2023; 91:486-503. [PMID: 37987298 PMCID: PMC10660545 DOI: 10.3390/arm91060036] [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: 08/31/2023] [Revised: 10/09/2023] [Accepted: 11/06/2023] [Indexed: 11/22/2023]
Abstract
Allergic diseases are a global public health problem that affects up to 30% of the population in industrialized societies. More than 40% of allergic patients suffer from grass pollen allergy. Grass pollen allergens of group 1 and group 5 are the major allergens, since they induce allergic reactions in patients at high rates. In this study, we used immunoinformatic approaches to design an effective epitope-based vaccine against the grass group 1 allergens. After the alignment of all known pollen T-cell and B-cell epitopes from pollen allergens available in the public databases, the epitope GTKSEVEDVIPEGWKADTSY was identified as the most suitable for further analyses. The target sequence was subjected to immunoinformatics analyses to predict antigenic T-cell and B-cell epitopes. Population coverage analysis was performed for CD8+ and CD4+ T-cell epitopes. The selected T-cell epitopes (VEDVIPEGW and TKSEVEDVIPEGWKA) covered 78.87% and 98.20% of the global population and 84.57% and 99.86% of the population of Europe. Selected CD8+, CD4+ T-cell and B-cell epitopes have been validated by molecular docking analysis. CD8+ and CD4+ T-cell epitopes showed a very strong binding affinity to major histocompatibility complex (MHC) class I (MHC I) molecules and MHC class II (MHC II) molecules with global energy scores of -72.1 kcal/mol and -89.59 kcal/mol, respectively. The human IgE-Fc (PDB ID 4J4P) showed a lower affinity with B-cell epitope (ΔG = -34.4 kcal/mol), while the Phl p 2-specific human IgE Fab (PDB ID 2VXQ) had the lowest binding with the B-cell epitope (ΔG = -29.9 kcal/mol). Our immunoinformatics results demonstrated that the peptide GTKSEVEDVIPEGWKADTSY could stimulate the immune system and we performed ex vivo tests showed that the investigated epitope activates T cells isolated from patients with grass pollen allergy, but it is not recognized by IgE antibodies specific for grass pollen allergens. This confirms the importance of such studies to establish universal epitopes to serve as a basis for developing an effective vaccine against a particular group of allergens. Further in vivo studies are needed to validate the effectiveness of such a vaccine against grass pollen allergens.
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Affiliation(s)
- Dzhemal Moten
- Department of Developmental Biology, Faculty of Biology, Paisii Hilendarski University of Plovdiv, 24 Tsar Assen Str., 4000 Plovdiv, Bulgaria; (D.M.); (T.B.); (D.A.); (B.D.)
| | - Tsvetelina Batsalova
- Department of Developmental Biology, Faculty of Biology, Paisii Hilendarski University of Plovdiv, 24 Tsar Assen Str., 4000 Plovdiv, Bulgaria; (D.M.); (T.B.); (D.A.); (B.D.)
| | - Desislava Apostolova
- Department of Developmental Biology, Faculty of Biology, Paisii Hilendarski University of Plovdiv, 24 Tsar Assen Str., 4000 Plovdiv, Bulgaria; (D.M.); (T.B.); (D.A.); (B.D.)
| | - Tsvetelina Mladenova
- Department of Botany and Biological Education, Faculty of Biology, Paisii Hilendarski University of Plovdiv, 24 Tsar Assen Str., 4000 Plovdiv, Bulgaria;
| | - Balik Dzhambazov
- Department of Developmental Biology, Faculty of Biology, Paisii Hilendarski University of Plovdiv, 24 Tsar Assen Str., 4000 Plovdiv, Bulgaria; (D.M.); (T.B.); (D.A.); (B.D.)
| | - Ivanka Teneva
- Department of Botany and Biological Education, Faculty of Biology, Paisii Hilendarski University of Plovdiv, 24 Tsar Assen Str., 4000 Plovdiv, Bulgaria;
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10
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Kusano S, Ueda S, Oryoji D, Toyoumi A, Hashimoto-Tane A, Kishi H, Hamana H, Muraguchi A, Jin H, Arase H, Miyadera H, Kishikawa R, Yoshikai Y, Yamada H, Yamamoto K, Nishimura Y, Saito T, Sasazuki T, Yokoyama S. Contributions of the N-terminal flanking residues of an antigenic peptide from the Japanese cedar pollen allergen Cry j 1 to the T-cell activation by HLA-DP5. Int Immunol 2023; 35:447-458. [PMID: 37418020 PMCID: PMC10478803 DOI: 10.1093/intimm/dxad024] [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: 08/03/2022] [Accepted: 06/05/2023] [Indexed: 07/08/2023] Open
Abstract
Cry j 1 is a major allergen present in Japanese cedar (Cryptomeria japonica) pollens. Peptides with the core sequence of KVTVAFNQF from Cry j 1 ('pCj1') bind to HLA-DP5 and activate Th2 cells. In this study, we noticed that Ser and Lys at positions -2 and -3, respectively, in the N-terminal flanking (NF) region to pCj1 are conserved well in HLA-DP5-binding allergen peptides. A competitive binding assay showed that the double mutation of Ser(-2) and Lys(-3) to Glu [S(P-2)E/K(P-3)E] in a 13-residue Cry j 1 peptide (NF-pCj1) decreased its affinity for HLA-DP5 by about 2-fold. Similarly, this double mutation reduced, by about 2-fold, the amount of NF-pCj1 presented on the surface of mouse antigen-presenting dendritic cell line 1 (mDC1) cells stably expressing HLA-DP5. We established NF-pCj1-specific and HLA-DP5-restricted CD4+ T-cell clones from HLA-DP5 positive cedar pollinosis (CP) patients, and analyzed their IL-2 production due to the activation of mouse TG40 cells expressing the cloned T-cell receptor by the NF-pCj1-presenting mDC1 cells. The T-cell activation was actually decreased by the S(P-2)E/K(P-3)E mutation, corresponding to the reduction in the peptide presentation by this mutation. In contrast, the affinity of NF-pCj1·HLA-DP5 for the T-cell receptor was not affected by the S(P-2)E/K(P-3)E mutation, as analyzed by surface plasmon resonance. Considering the positional and side-chain differences of these NF residues from previously reported T-cell activating sequences, the mechanisms of enhanced T-cell activation by Ser(-2) and Lys(-3) of NF-pCj1 may be novel.
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Affiliation(s)
- Seisuke Kusano
- RIKEN Structural Biology Laboratory, Yokohama 230-0045, Japan
- RIKEN Cluster for Science, Technology and Innovation Hub, Yokohama 230-0045, Japan
| | - Sho Ueda
- Institute for Advanced Study, Kyushu University, Fukuoka 812-8582, Japan
| | - Daisuke Oryoji
- Institute for Advanced Study, Kyushu University, Fukuoka 812-8582, Japan
| | - Aya Toyoumi
- Institute for Advanced Study, Kyushu University, Fukuoka 812-8582, Japan
| | | | - Hiroyuki Kishi
- Department of Immunology, Faculty of Medicine, Academic Assembly, University of Toyama, Toyama 930-0194, Japan
| | - Hiroshi Hamana
- Department of Immunology, Faculty of Medicine, Academic Assembly, University of Toyama, Toyama 930-0194, Japan
| | - Atsushi Muraguchi
- Department of Immunology, Faculty of Medicine, Academic Assembly, University of Toyama, Toyama 930-0194, Japan
| | - Hui Jin
- Department of Immunochemistry, Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan
| | - Hisashi Arase
- Department of Immunochemistry, Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan
- Laboratory of Immunochemistry, WPI Immunology Frontier Research Center, Osaka University, Osaka 565-0871, Japan
| | - Hiroko Miyadera
- Department of Human Genetics, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan
- Research Institute, National Center for Global Health and Medicine, Chiba 272-8516, Japan
- Department of Medical Genetics, Institute of Medicine, University of Tsukuba, Tsukuba 305-8575, Japan
| | - Reiko Kishikawa
- Department of Allergology, The National Hospital Organization Fukuoka National Hospital, Fukuoka 811-1394, Japan
| | - Yasunobu Yoshikai
- Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan
| | - Hisakata Yamada
- Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan
| | - Ken Yamamoto
- Department of Medical Biochemistry, Kurume University School of Medicine, Kurume 830-0011, Japan
| | - Yasuharu Nishimura
- Department of Immunogenetics, Graduate School of Medical Sciences, Kumamoto University, Kumamoto 860-8556, Japan
| | - Takashi Saito
- RIKEN Center for Integrative Medical Sciences, Yokohama 230-0045, Japan
| | - Takehiko Sasazuki
- Institute for Advanced Study, Kyushu University, Fukuoka 812-8582, Japan
| | - Shigeyuki Yokoyama
- RIKEN Structural Biology Laboratory, Yokohama 230-0045, Japan
- RIKEN Cluster for Science, Technology and Innovation Hub, Yokohama 230-0045, Japan
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11
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Zhang P, Jia Y, Jing Z, Huang J, Wu H, Sun X. Efficacy and safety of house dust mite subcutaneous immunotherapy in polysensitized children with allergic asthma. Pulm Pharmacol Ther 2023; 78:102187. [PMID: 36603742 DOI: 10.1016/j.pupt.2022.102187] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 12/01/2022] [Accepted: 12/31/2022] [Indexed: 01/03/2023]
Abstract
INTRODUCTION The aim of this study was to compare the efficacy and safety of 3 years of HDM subcutaneous immunotherapy (HDM-SCIT) in allergic asthma (AA) children with mono- and polysensitized. METHODS This was a retrospective observational study, 51 AA children (aged 4-14 years) who had completed 3 years of standardized HDM-SCIT were enrolled in. Based on skin prick tests (SPT) and allergen-specific IgE antibody (sIgE) test results, children were classified into two groups: the monosensitized group (n = 31) and the polysensitized group (n = 20). Total asthma symptoms score (TASS), total medication score (TMS), visual analog scale (VAS) scores, fractional exhaled nitric oxide (FeNO), lung function parameters, and adverse reactions were evaluated before treatment and at 6 months, 1, 2, 3 years of HDM-SCIT. RESULTS In terms of effectiveness, compared to baseline, TASS, TMS, VAS, FeNO and lung function parameters were significantly improved in both groups after 3 years of HDM-SCIT (all P < 0.05). The comparison between the two groups showed that efficacy indicators were no statistically significant difference at follow-up time points (all P > 0.05) except PEF%pred at 6 months (P = 0.048). In terms of security, the number of adverse reactions in both groups also no statistical difference between the two groups (all P > 0.05). CONCLUSION This study confirmed that no significant difference was observed in the clinical efficacy and safety of HDM-SCIT between mono-and polysensitized children with allergic asthma.
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Affiliation(s)
- Panpan Zhang
- Department of Pediatrics, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Yuanyuan Jia
- Department of Pediatrics, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Zenghui Jing
- Department of Pediatrics, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Jinli Huang
- Department of Pediatrics, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Huajie Wu
- Department of Pediatrics, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, China.
| | - Xin Sun
- Department of Pediatrics, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, China.
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12
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Fernández-González M, Ribeiro H, Rodríguez-Rajo FJ, Cruz A, Abreu I. Short-Term Exposure of Dactylis glomerata Pollen to Atmospheric Gaseous Pollutants Is Related to an Increase in IgE Binding in Patients with Grass Pollen Allergies. PLANTS (BASEL, SWITZERLAND) 2022; 12:76. [PMID: 36616204 PMCID: PMC9823458 DOI: 10.3390/plants12010076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 12/07/2022] [Accepted: 12/20/2022] [Indexed: 06/17/2023]
Abstract
The concentrations of nitrogen dioxide (NO2) and tropospheric ozone (O3) in urban and industrial site atmospheres are considered key factors associated with pollen-related respiratory allergies. This work studies the effects of NO2 and O3 on the protein expression profile and IgE binding in patients with grass allergies to Dactylis glomerata pollen extracts. Pollens were collected during the flowering season and were exposed to NO2 and O3 in a controlled environmental chamber. The amount of soluble protein was examined using the Bradford method, and the protein expression profile and antigenic properties were analysed using the immunoblotting and enzyme-linked immunosorbent assay (ELISA), respectively. Our results showed apparent inter-sera differences concerning the number and intensity of IgE reactivity, with the most prominent at bands of 55 kDa, 35, 33, and 13 kDa. In the 13 kDa band, both gases tend to induce an increase in IgE binding, the band at 33 kDa showed a tendency towards a reduction, particularly pollen exposed to O3. Reactive bands at 55 and 35 kDa presented an increase in the IgE binding pattern for all the patient sera samples exposed to NO2, but the samples exposed to O3 showed an increase in some sera and in others a decrease. Regarding the ELISA results, out of the 21 tested samples, only 9 showed a statistically significant increase in total IgE reactivity after pollen exposure to the pollutants. Our study revealed that although airborne pollen allergens might be affected by air pollution, the possible impacts on allergy symptoms might vary depending on the type of pollutant and the patient's sensitisation profile.
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Affiliation(s)
- María Fernández-González
- Department of Plant Biology and Soil Sciences, Faculty of Sciences, University of Vigo, 32004 Ourense, Spain
| | - Helena Ribeiro
- Earth Sciences Institute (ICT), Pole of the Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
- Department of Geosciences, Environment and Spatial Plannings, Faculty of Sciences, University of Porto, Rua do Campo Alegre 687, 4169-007 Porto, Portugal
| | - Fco. Javier Rodríguez-Rajo
- Department of Plant Biology and Soil Sciences, Faculty of Sciences, University of Vigo, 32004 Ourense, Spain
| | - Ana Cruz
- Clinical Pathology Service, Immunology Laboratory Vila Nova de Gaia Hospitalar Centre, 4434-502 Vila Nova de Gaia, Portugal
| | - Ilda Abreu
- Earth Sciences Institute (ICT), Pole of the Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
- Department of Biology, Faculty of Sciences University of Porto, 4169-007 Porto, Portugal
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13
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Glenn KC, Silvanovich A, Lee SG, Allen A, Park S, Dunn SE, Kessenich C, Meng C, Vicini JL, Jez JM. Biochemical and clinical studies of putative allergens to assess what distinguishes them from other non-allergenic proteins in the same family. Transgenic Res 2022; 31:507-524. [PMID: 35939227 PMCID: PMC9489553 DOI: 10.1007/s11248-022-00316-8] [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: 11/16/2021] [Accepted: 07/21/2022] [Indexed: 10/26/2022]
Abstract
Many protein families have numerous members listed in databases as allergens; however, some allergen database entries, herein called "orphan allergens", are members of large families of which all other members are not allergens. These orphan allergens provide an opportunity to assess whether specific structural features render a protein allergenic. Three orphan allergens [Cladosporium herbarum aldehyde dehydrogenase (ChALDH), Alternaria alternata ALDH (AaALDH), and C. herbarum mannitol dehydrogenase (ChMDH)] were recombinantly produced and purified for structure characterization and for clinical skin prick testing (SPT) in mold allergic participants. Examination of the X-ray crystal structures of ChALDH and ChMDH and a homology structure model of AaALDH did not identify any discernable epitopes that distinguish these putative orphan allergens from their non-allergenic protein relatives. SPT results were aligned with ChMDH being an allergen, 53% of the participants were SPT (+). AaALDH did not elicit SPT reactivity above control proteins not in allergen databases (i.e., Psedomonas syringae indole-3-acetaldehyde dehydrogenase and Zea mays ALDH). Although published results showed consequential human IgE reactivity with ChALDH, no SPT reactivity was observed in this study. With only one of these three orphan allergens, ChMDH, eliciting SPT(+) reactions consistent with the protein being included in allergen databases, this underscores the complicated nature of how bioinformatics is used to assess the potential allergenicity of food proteins that could be newly added to human diets and, when needed, the subsequent clinical testing of that bioinformatic assessment.Trial registration number and date of registration AAC-2017-0467, approved as WIRB protocol #20172536 on 07DEC2017 by WIRB-Copernicus (OHRP/FDA Registration #: IRB00000533, organization #: IORG0000432).
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Affiliation(s)
- Kevin C Glenn
- Bayer Crop Science, 700 Chesterfield Pkwy W, Chesterfield, MO, 63017, USA
| | - Andre Silvanovich
- Bayer Crop Science, 700 Chesterfield Pkwy W, Chesterfield, MO, 63017, USA
| | - Soon Goo Lee
- Department of Biology, Washington University, CB 1137, One Brookings Dr., St. Louis, MO, 63130, USA.,Department of Chemistry and Biochemistry, University of North Carolina Wilmington, Wilmington, NC, 28403, USA
| | - Aron Allen
- Department of Biology, Washington University, CB 1137, One Brookings Dr., St. Louis, MO, 63130, USA
| | - Stephanie Park
- Allergy and Asthma Care of St. Louis, 8888 Ladue Road, Suite 105, St. Louis, MO, 63124, USA
| | - S Eliza Dunn
- Bayer Crop Science, 700 Chesterfield Pkwy W, Chesterfield, MO, 63017, USA
| | - Colton Kessenich
- Bayer Crop Science, 700 Chesterfield Pkwy W, Chesterfield, MO, 63017, USA
| | - Chen Meng
- Bayer Crop Science, 700 Chesterfield Pkwy W, Chesterfield, MO, 63017, USA
| | - John L Vicini
- Bayer Crop Science, 700 Chesterfield Pkwy W, Chesterfield, MO, 63017, USA.
| | - Joseph M Jez
- Department of Biology, Washington University, CB 1137, One Brookings Dr., St. Louis, MO, 63130, USA
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14
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Simay S, Akbarzadeh-Khiavi M, Pourseif MM, Barar J, Safary A, Omidi Y. Recombinant production and characterization of L-glutaminase (glsA) as a promiscuity therapeutic enzyme. Appl Microbiol Biotechnol 2022; 106:5511-5524. [PMID: 35876873 DOI: 10.1007/s00253-022-12058-y] [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: 02/20/2022] [Revised: 06/14/2022] [Accepted: 06/28/2022] [Indexed: 11/02/2022]
Abstract
Because of the therapeutical impacts of hydrolytic enzymes in different diseases, in particular malignancies, we aimed to produce a recombinant putative L-glutaminase (GLS ASL-1) from a recently characterized halo-thermotolerant Bacillus sp. SL-1. For this purpose, the glsA gene was identified and efficiently overexpressed in the Origami™ B (DE3) strain. The yield of the purified GLS ASL-1 was ~ 20 mg/L, indicating a significant expression of recombinant enzyme in the Origami. The enzyme activity assay revealed a significant hydrolytic effect of the recombinant GLS ASL-1 on L-asparagine (Asn) (i.e., Km 39.8 μM, kcat 19.9 S-1) with a minimal affinity for L-glutamine (Gln). The GLS ASL-1 significantly suppressed the growth of leukemic Jurkat cells through apoptosis induction (47.5%) in the IC50 dosage of the enzyme. The GLS ASL-1 could also change the Bax/Bcl2 expression ratio, indicating its apoptotic effect on cancer cells. The in silico analysis was conducted to predict structural features related to the histidine-tag exposure in the N- or C-terminal of the recombinant GLS ASL-1. In addition, molecular docking simulation for substrate specificity revealed a greater binding affinity of Asn to the enzyme binding-site residues than Gln, which was confirmed in experimental procedures as well. In conclusion, the current study introduced a recombinant GLS ASL-1 with unique functional and structural features, highlighting its potential pharmaceutical and medical importance. GLS ASL-1 represents the first annotated enzyme from Bacillus with prominent asparaginase activity, which can be considered for developing alternative enzymes in therapeutic applications. KEY POINTS: • Hydrolytic enzymes have critical applications in different types of human malignancies. • A recombinant L-glutaminase (GLS ASL-1) was produced from halo-thermotolerant Bacillus sp. SL-1. • GLS ASL-1 displayed a marked hydrolytic activity on L-asparagine compared to the L-glutamine. • GLS ASL-1 with significant substrate promiscuity may be an alternative for developing novel pharmaceuticals.
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Affiliation(s)
- Shayan Simay
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mostafa Akbarzadeh-Khiavi
- Liver and Gastrointestinal Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad M Pourseif
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Jaleh Barar
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Azam Safary
- Connective Tissue Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Yadollah Omidi
- Department of Pharmaceutical Sciences, College of Pharmacy, Nova Southeastern University, Fort Lauderdale, FL, 33328, USA.
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15
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Abstract
This review provides a global overview on Rosaceae allergy and details the particularities of each fruit allergy induced by ten Rosaceae species: almond/peach/cherry/apricot/plum (Amygdaleae), apple/pear (Maleae), and raspberry/blackberry/strawberry (Rosoideae). Data on clinical symptoms, prevalence, diagnosis, and immunotherapies for the treatment of Rosaceae allergy are herein stated. Allergen molecular characterization, cross-reactivity/co-sensitization phenomena, the impact of food processing and digestibility, and the methods currently available for the Rosaceae detection/quantification in foods are also described. Rosaceae allergy has a major impact in context to pollen-food allergy syndrome (PFAS) and lipid transfer protein (LTP) allergies, being greatly influenced by geography, environment, and presence of cofactors. Peach, apple, and almond allergies are probably the ones most affecting the quality of life of the allergic-patients, although allergies to other Rosaceae fruits cannot be overlooked. From patients' perspective, self-allergy management and an efficient avoidance of multiple fruits are often difficult to achieve, which might raise the risk for cross-reactivity and co-sensitization phenomena and increase the severity of the induced allergic responses with time. At this point, the absence of effective allergy diagnosis (lack of specific molecular markers) and studies advancing potential immunotherapies are some gaps that certainly will prompt the progress on novel strategies to manage Rosaceae food allergies.
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Affiliation(s)
- Joana Costa
- REQUIMTE-LAQV, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal
| | - Isabel Mafra
- REQUIMTE-LAQV, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal
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16
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Jiao L, Su CW, Cao T, Zheng S, Walker WA, Shi HN. Maternal Influences and Intervention Strategies on the Development of Food Allergy in Offspring. Front Immunol 2022; 13:817062. [PMID: 35281070 PMCID: PMC8904425 DOI: 10.3389/fimmu.2022.817062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 02/01/2022] [Indexed: 11/24/2022] Open
Abstract
Food allergies and other immune-mediated diseases have become serious health concerns amongst infants and children in developed and developing countries. The absence of available cures limits disease management to allergen avoidance and symptomatic treatments. Research has suggested that the presence of maternal food allergies may expose the offspring to genetic predisposition, making them more susceptible to allergen sensitization. The following review has focused on epidemiologic studies regarding maternal influences of proneness to develop food allergy in offspring. The search strategy was "food allergy OR maternal effects OR offspring OR prevention". A systematically search from PubMed/MEDLINE, Science Direct and Google Scholar was conducted. Specifically, it discussed the effects of maternal immunity, microbiota, breastfeeding, genotype and allergy exposure on the development of food allergy in offspring. In addition, several commonly utilized prenatal and postpartum strategies to reduce food allergy proneness were presented, including early diagnosis of high-risk infants and various dietary interventions.
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Affiliation(s)
- Lefei Jiao
- School of Marine Sciences, Ningbo University, Ningbo, China
- Mucosal Immunology and Biology Research Center, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, United States
| | - Chien-Wen Su
- Mucosal Immunology and Biology Research Center, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, United States
| | - Tinglan Cao
- Laboratory for Lipid Medicine and Technology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, United States
| | - Shasha Zheng
- Department of Nutrition, California Baptist University, Riverside, CA, United States
| | - W. Allan Walker
- Mucosal Immunology and Biology Research Center, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, United States
| | - Hai Ning Shi
- Mucosal Immunology and Biology Research Center, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, United States
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17
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Juprasong Y, Songnuan W. Plant Stress Scenarios Differentially Affect Expression and IgE Reactivity of Grass Group-1 Allergen (β-Expansin) in Maize and Rice Pollen. FRONTIERS IN ALLERGY 2022; 3:807387. [PMID: 35386660 PMCID: PMC8974862 DOI: 10.3389/falgy.2022.807387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 01/17/2022] [Indexed: 11/26/2022] Open
Abstract
Grass pollen is among the most common outdoor aeroallergens eliciting pollen allergies throughout the world. Grass group-1 allergen or β-expansin is recognized as a major pollen allergen, particularly in the grass family Poaceae. Expression of β-expansin has been shown to be dynamic and can be influenced by environmental stresses. This study evaluated the relative expression of β-expansin and IgE-binding ability of crude pollen extract protein of rice and maize under three different stress conditions: flood, salt, and drought. After 1 week of treatments, anthers containing pollen were collected followed by RNA extraction and cDNA synthesis. To evaluate relative expression, qRT-PCR was performed using specific primers for β-expansin and reference genes. Physiological characteristics of treated and untreated maize and rice: plant height; fresh weight of anthers; number of inflorescences, anthers, and pollen grains were also recorded. To assess IgE-binding ability of proteins in rice pollen extracts, soluble crude proteins were extracted and IgE immunoblot and ELISA were performed using serum samples from grass-allergic subjects and healthy control donors. Results showed that plant height, fresh weight of anthers, number of inflorescences, anthers, and pollen grains of both maize and rice decreased significantly under drought stress conditions, but not in other conditions. Expression of β-expansin in pollen of rice showed an apparent increase in all stress treatments relative to control samples. In contrast, a significant decrease of β-expansin expression was detected in maize pollen under all stress-treated conditions. IgE-reactive protein bands from rice pollen extract proteins were ~30 kDa, as expected of the grass-group 1 protein. The intensity of IgE-reactive protein bands and the level of IgE to rice pollen proteins showed significant differences among stress conditions. In conclusion, environmental stresses—flood, salt, and drought, can elicit a change of β-expansin expression and IgE reactivity to grass group-1 pollen allergens. Changes in expression level of this gene likely reflected its importance during stress. However, the response is highly dependent on different schemes employed by each plant species.
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Affiliation(s)
- Yotin Juprasong
- Graduate Program in Toxicology, Faculty of Science, Mahidol University, Bangkok, Thailand
- Center of Excellence on Environmental Health and Toxicology, Faculty of Science, Mahidol University, Bangkok, Thailand
- Systems Biology of Diseases Research Unit, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Wisuwat Songnuan
- Center of Excellence on Environmental Health and Toxicology, Faculty of Science, Mahidol University, Bangkok, Thailand
- Systems Biology of Diseases Research Unit, Faculty of Science, Mahidol University, Bangkok, Thailand
- Department of Plant Science, Faculty of Science, Mahidol University, Bangkok, Thailand
- *Correspondence: Wisuwat Songnuan
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18
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Aloui A, Kalboussi H, Maoua M, Zammit N, Chelly F, Bouhoula M, Chouchane A, Kacem I, El Maalel O, Chatti S, Mrizek N. Prévalence des allergies croisées diagnostiquées dans une unité de Dermato-allergologie de la région du centre Tunisien. ARCH MAL PROF ENVIRO 2022. [DOI: 10.1016/j.admp.2021.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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19
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Xu Y, Guan K, Sha L, Zhang J, Niu Y, Yin J, Wang L. Sensitization Profiles of Timothy Grass Pollen in Northern China. J Asthma Allergy 2021; 14:1431-1439. [PMID: 34876820 PMCID: PMC8643203 DOI: 10.2147/jaa.s334183] [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: 08/18/2021] [Accepted: 11/03/2021] [Indexed: 11/23/2022] Open
Abstract
Purpose Grass pollen is an important cause of IgE-mediated allergy in countries worldwide, especially within Europe. However, there has been no research on grass pollen allergy in northern China. We aimed to determine the status of grass pollen allergy and the sensitization patterns to Phleum pratense (P. pratense) in northern China. Patients and Methods Pollen data were collected for three geographic areas (Beijing, Shenmu, Shizuishan) in northern China. The study enrolled 101 patients (62 men; age range, 1–64 years; median age, 10 years) who had allergic rhinoconjunctivitis and/or asthma during the grass pollen season and positive skin prick test results positive to P. pratense. Serum-specific IgE (sIgE) against Phl p 1, Phl p 2, Phl p 5, Phl p 6, Phl p 7, Phl p 12 was measured by ImmunoCAP. Results The pollen season of P. pratense was from June to September in Beijing, May to September in Shenmu and July to August in Shizuishan. P. pratense pollen accounted for 2–3% of the annual pollen index of total pollen counts. Among 101 patients with positive skin prick test results to P. pratense, 72% had detectable sIgE to P. pratense. Phl p 12 was the most frequently recognized component (45%), followed by Phl p 1 (22%), Phl p 5 (14%), Phl p 6 (8%) and Phl p 7 (3%). No patients had sIgE to Phl p 2. Ten sensitization patterns to the six components were observed. High rate of sIgE to Phl p 12 was positively correlated with co-sensitization to weed or tree pollen. Conclusion Considering the pollen concentration, P. pratense was a minor pollen allergen in northern China and its pollen season overlapped with that of weed pollen. IgE sensitization to P. pratense was likely to be induced by cross-reactivity between grass pollen allergy and weed/tree pollen allergy.
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Affiliation(s)
- Yingyang Xu
- Department of Allergy, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, People's Republic of China.,Beijing Key Laboratory of Precision Medicine for Diagnosis and Treatment on Allergic Diseases, Beijing, 100730, People's Republic of China.,National Clinical Research Center for Dermatologic and Immunologic Diseases, Beijing, 100730, People's Republic of China
| | - Kai Guan
- Department of Allergy, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, People's Republic of China.,Beijing Key Laboratory of Precision Medicine for Diagnosis and Treatment on Allergic Diseases, Beijing, 100730, People's Republic of China.,National Clinical Research Center for Dermatologic and Immunologic Diseases, Beijing, 100730, People's Republic of China
| | - Li Sha
- Department of Allergy, Capital Institute of Pediatrics, Beijing, 100020, People's Republic of China
| | - Jinghong Zhang
- Department of Allergy, The No.1 People's Hospital of Shizuishan, Shizuishan, 753000, Ningxia Hui Autonomous Region, People's Republic of China
| | - Yongliang Niu
- Department of Respiratory and Critical Care Medicine, Shenmu Hospital, Shenmu, 719300, Shanxi, People's Republic of China
| | - Jia Yin
- Department of Allergy, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, People's Republic of China.,Beijing Key Laboratory of Precision Medicine for Diagnosis and Treatment on Allergic Diseases, Beijing, 100730, People's Republic of China.,National Clinical Research Center for Dermatologic and Immunologic Diseases, Beijing, 100730, People's Republic of China
| | - Lianglu Wang
- Department of Allergy, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, People's Republic of China.,Beijing Key Laboratory of Precision Medicine for Diagnosis and Treatment on Allergic Diseases, Beijing, 100730, People's Republic of China.,National Clinical Research Center for Dermatologic and Immunologic Diseases, Beijing, 100730, People's Republic of China
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20
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Lipp T, Acar Şahin A, Aggelidis X, Arasi S, Barbalace A, Bourgoin A, Bregu B, Brighetti MA, Caeiro E, Caglayan Sozmen S, Caminiti L, Charpin D, Couto M, Delgado L, Di Rienzo Businco A, Dimier C, Dimou MV, Fonseca JA, Goksel O, Guvensen A, Hernandez D, Hoffmann TM, Jang DT, Kalpaklioglu F, Lame B, Llusar R, Makris MP, Mazon A, Mesonjesi E, Nieto A, Öztürk A, Pahus L, Pajno GB, Panasiti I, Papadopoulos NG, Pellegrini E, Pelosi S, Pereira AM, Pereira M, Pinar M, Potapova E, Priftanji A, Psarros F, Sackesen C, Sfika I, Suarez J, Thibaudon M, Travaglini A, Tripodi S, Verdier V, Villella V, Xepapadaki P, Yazici D, Matricardi PM, Dramburg S. Heterogeneity of pollen food allergy syndrome in seven Southern European countries: The @IT.2020 multicenter study. Allergy 2021; 76:3041-3052. [PMID: 33492738 DOI: 10.1111/all.14742] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 11/17/2020] [Accepted: 11/25/2020] [Indexed: 12/19/2022]
Abstract
BACKGROUND Pollen food allergy syndrome (PFAS) is a frequently underdiagnosed disease due to diverse triggers, clinical presentations, and test results. This is especially relevant in geographic areas with a broad spectrum of pollen sensitization, such as Southern Europe. OBJECTIVES To elucidate similarities and differences of PFAS in nine Southern European centers and identify associated characteristics and unique markers of PFAS. METHODS As part of the @IT.2020 Multicenter Study, 815 patients with seasonal allergic rhinitis (SAR), aged 10-60 years, were recruited in seven countries. They completed questionnaires regarding SAR, comorbidities, family history, and PFAS, and underwent skin prick testing (SPT) and serum IgE testing. RESULTS Of the 815 patients, 167 (20.5%) reported PFAS reactions. Most commonly, eliciting foods were kiwi (58, 34.7%), peach (43, 25.7%), and melon (26, 15.6%). Reported reactions were mostly local (216/319, 67.7%), occurring within 5 min of contact with elicitors (209/319, 65.5%). Associated characteristics included positive IgE to at least one panallergen (profilin, PR-10, or nsLTP) (p = 0.007), maternal PFAS (OR: 3.716, p = 0.026), and asthma (OR: 1.752, p = 0.073). Between centers, heterogeneity in prevalence (Marseille: 7.5% vs. Rome: 41.4%, p < 0.001) and of clinical characteristics was apparent. Cypress played a limited role, with only 1/22 SPT mono-sensitized patients reporting a food reaction (p < 0.073). CONCLUSIONS PFAS is a frequent comorbidity in Southern European SAR patients. Significant heterogeneity of clinical characteristics in PFAS patients among the centers was observed and may be related to the different pollen sensitization patterns in each geographic area. IgE to panallergen(s), maternal PFAS, and asthma could be PFAS-associated characteristics.
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Affiliation(s)
- Theresa Lipp
- Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine Charité – Universitätsmedizin Berlin Berlin Germany
| | - Aydan Acar Şahin
- Department of Biology Faculty of Science Ankara University Ankara Turkey
| | - Xenophon Aggelidis
- Allergy Unit, 2nd Department of Dermatology and Venereology National and Kapodistrian University of AthensUniversity Hospital "Attikon" Athens Greece
| | - Stefania Arasi
- Pediatric Allergology Unit Department of Pediatric Medicine Bambino Gesù Children's Research Hospital (IRCCS) Rome Italy
| | - Andrea Barbalace
- Department of Pediatrics‐Allergy Unit University of Messina Messina Italy
| | - Anne Bourgoin
- Department of Pneumonology and Allergy La Timone HospitalAPHMAix‐Marseille University Marseille France
| | - Blerina Bregu
- Department of Allergology and Clinical Immunology UHC Mother TeresaMedical University Tirana Tirana Albania
| | | | - Elsa Caeiro
- MED‐Mediterranean Institute for Agriculture, Environment and Development Institute for Advanced Studies and Research University of Évora Évora Portugal
- Portuguese Society of Allergology and Clinical Immunology Lisbon Portugal
| | - Sule Caglayan Sozmen
- Department of Pediatric Allergy and Immunology Okan University Faculty of Medicine Istanbul Turkey
| | - Lucia Caminiti
- Department of Pediatrics‐Allergy Unit University of Messina Messina Italy
| | - Denis Charpin
- Department of Pneumonology and Allergy La Timone HospitalAPHMAix‐Marseille University Marseille France
| | - Mariana Couto
- Department of Immunoallergology CUF Decobertas HospitalJosé de Mello Saúde Porto Portugal
| | - Luís Delgado
- Basic and Clinical Immunology Unit Department of Pathology Faculty of Medicine University of Porto Porto Portugal
- CINTESIS Center for Health Technology and Services Research Porto Portugal
- Allergy Unit Instituto & Hospital CUF Porto Porto Portugal
| | | | - Claire Dimier
- Department of Pneumonology and Allergy La Timone HospitalAPHMAix‐Marseille University Marseille France
| | - Maria V. Dimou
- Allergy Department 2nd Pediatric Clinic Athens General Children's Hospital “P&A Kyriakou”University of Athens Athens Greece
| | - João A. Fonseca
- CINTESIS Center for Health Technology and Services Research Porto Portugal
- Allergy Unit Instituto & Hospital CUF Porto Porto Portugal
- MEDCIDS‐Department of Community Medicine, Information, and Health Sciences Faculty of Medicine University of Porto Porto Portugal
| | - Ozlem Goksel
- Department of Pulmonary Medicine Division of Immunology, Allergy and Asthma Faculty of Medicine Ege University Izmir Turkey
| | - Aykut Guvensen
- Department of Biology Faculty of Science Ege University Izmir Turkey
| | - Dolores Hernandez
- Department of Allergy Health Research Institute Hospital La Fe Valencia Spain
| | - Tara Maria Hoffmann
- Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine Charité – Universitätsmedizin Berlin Berlin Germany
| | - Dah Tay Jang
- Pediatric Allergy and Pneumology Unit Children's Hospital La Fe Health Research Institute La Fe Valencia Spain
| | - Fusun Kalpaklioglu
- Department of Immunology and Allergic Diseases Kırıkkale University School of Medicine Ankara Turkey
| | - Blerta Lame
- Department of Allergology and Clinical Immunology UHC Mother TeresaMedical University Tirana Tirana Albania
| | - Ruth Llusar
- Pediatric Allergy and Pneumology Unit Children's Hospital La Fe Health Research Institute La Fe Valencia Spain
| | - Michael P. Makris
- Allergy Unit, 2nd Department of Dermatology and Venereology National and Kapodistrian University of AthensUniversity Hospital "Attikon" Athens Greece
| | - Angel Mazon
- Pediatric Allergy and Pneumology Unit Children's Hospital La Fe Health Research Institute La Fe Valencia Spain
| | - Eris Mesonjesi
- Department of Allergology and Clinical Immunology UHC Mother TeresaMedical University Tirana Tirana Albania
| | - Antonio Nieto
- Pediatric Allergy and Pneumology Unit Children's Hospital La Fe Health Research Institute La Fe Valencia Spain
| | - Ayse Öztürk
- Department of Pulmonary Medicine Division of Allergy and Immunology Koç University, School of Medicine Istanbul Turkey
| | - Laurie Pahus
- Department of Pneumonology and Allergy North HospitalAPHMAix‐Marseille University Marseille France
| | | | - Ilenia Panasiti
- Department of Pediatrics‐Allergy Unit University of Messina Messina Italy
| | - Nikolaos G. Papadopoulos
- Allergy Department 2nd Pediatric Clinic Athens General Children's Hospital “P&A Kyriakou”University of Athens Athens Greece
- Division of Infection, Immunity & Respiratory Medicine Royal Manchester Children's HospitalUniversity of Manchester Manchester UK
| | - Elisabetta Pellegrini
- Department of Reggio Calabria ARPA‐Regional Agency for Environmental Protection Calabria Italy
| | | | - Ana M. Pereira
- CINTESIS Center for Health Technology and Services Research Porto Portugal
- Allergy Unit Instituto & Hospital CUF Porto Porto Portugal
- MEDCIDS‐Department of Community Medicine, Information, and Health Sciences Faculty of Medicine University of Porto Porto Portugal
| | - Mariana Pereira
- CINTESIS Center for Health Technology and Services Research Porto Portugal
- Allergy Unit Instituto & Hospital CUF Porto Porto Portugal
| | - Munevver Pinar
- Department of Biology Faculty of Science Ankara University Ankara Turkey
| | - Ekaterina Potapova
- Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine Charité – Universitätsmedizin Berlin Berlin Germany
| | - Alfred Priftanji
- Department of Allergology and Clinical Immunology UHC Mother TeresaMedical University Tirana Tirana Albania
| | - Fotis Psarros
- Allergy Department Athens Naval Hospital Athens Greece
| | - Cansin Sackesen
- Division of Pediatric Allergy Koç University School of Medicine Istanbul Turkey
| | - Ifigenia Sfika
- Pediatric Allergy Unit Sandro Pertini Hospital Rome Italy
| | - Javier Suarez
- Department of Biology of Organisms and Systems Area of Botany University of Oviedo Oviedo Spain
| | | | - Alessandro Travaglini
- Department of Biology Tor Vergata University Rome Italy
- Italian Aerobiology Monitoring Network‐Italian Aerobiology Association Rome Italy
| | - Salvatore Tripodi
- Pediatric Allergy Unit Sandro Pertini Hospital Rome Italy
- Allergolology Service Policlinico Casilino Rome Italy
| | - Valentine Verdier
- Department of Pneumonology and Allergy La Timone HospitalAPHMAix‐Marseille University Marseille France
| | | | - Paraskevi Xepapadaki
- Allergy Department 2nd Pediatric Clinic National and Kapodistrian University of Athens Athens Greece
| | - Duygu Yazici
- Cellular and Molecular Medicine KUTTAM Graduate School of Health Sciences Koç University Istanbul Turkey
| | - Paolo M. Matricardi
- Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine Charité – Universitätsmedizin Berlin Berlin Germany
| | - Stephanie Dramburg
- Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine Charité – Universitätsmedizin Berlin Berlin Germany
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21
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Asero R, Ariano R, Aruanno A, Barzaghi C, Borrelli P, Busa M, Celi G, Cinquini M, Cortellini G, D’Auria F, De Carli M, Di Paolo C, Garzi G, Lodi Rizzini F, Magnani M, Manzotti G, Marra A, Miceli Sopo S, Murzilli F, Nucera E, Pinter E, Pravettoni V, Rivolta F, Rizzi A, Saporiti N, Scala E, Villalta D, Yacoub M, Zisa G. Systemic allergic reactions induced by labile plant-food allergens: Seeking potential cofactors. A multicenter study. Allergy 2021; 76:1473-1479. [PMID: 33080053 DOI: 10.1111/all.14634] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 09/13/2020] [Accepted: 10/05/2020] [Indexed: 01/17/2023]
Abstract
BACKGROUND Heat-and-pepsin-sensitive plant food allergens (PR-10 and profilin) sometimes cause systemic reaction. OBJECTIVE To detect the risk factors for systemic reactions induced by labile food allergens. METHODS A retrospective multicenter study was performed on patients with a documented history of systemic allergic reaction to labile plant food allergens and on age-matched controls with a history of oral allergy syndrome (OAS) induced by the same foods. Offending foods, their amount, and state (solid or liquid), and potential cofactors (nonsteroidal anti-inflammatory drugs, protonic pump inhibitors, exercise, alcohol, and fasting) were considered. RESULTS We studied 89 patients and 81 controls. Sensitization to PR-10 or profilin, IgE to Bet v 1 and/or Bet v 2, and foods causing OAS were similar in the two groups. Twenty patients experienced >1 systemic allergic reaction. Tree nuts, Rosaceae, Apiaceae, and soymilk were the main offending foods. Seventeen (19%) patients were taking a PPI when the systemic reaction occurred (vs 5% in controls; P < .025). The ingestion of the offending food in liquid form (soymilk) was frequent among patients (15%) but unusual among controls (2%; P < .025). Soy milk-induced systemic reactions were independent of PPI treatment. Fasting and excess of allergen, but not NSAID and exercise, were other relevant cofactors for systemic reactions. Systemic reactions occurred without any identifiable cofactor in 39 (44%) cases. CONCLUSION PR-10- and profilin-induced systemic reactions are facilitated by PPI, ingestion of large amounts of unprocessed foods, and fasting. Soybean beverages represent a risk for PR-10 hypersensitive patients and should be avoided.
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Affiliation(s)
- Riccardo Asero
- Ambulatorio di Allergologia Clinica san Carlo Paderno Dugnano (MI) Italia
| | | | - Arianna Aruanno
- Fondazione Policlinico Universitario A. Gemelli‐ IRCCS Università Cattolica del Sacro Cuore Roma Italy
| | - Claudio Barzaghi
- Ambulatorio di Allergologia UOC Medicina ASST Rhodenese, P.O Rho Rho Italia
| | - Paolo Borrelli
- SSD Dermatologia e Allergologia ‐ Ospedale Beauregard Aosta Italia
| | - Moira Busa
- Ambulatorio di Allergologia U.O.S. Dermatologia Ospedale di Mirano (VE) Mirano Italia
- Ambulatorio di Allergologia Ospedale di Bassano del Grappa (VI) Bassano del Grappa Italia
| | | | | | | | | | - Marco De Carli
- S.O.C Medicina 2 Presidio Ospedaliero "Santa Maria della Misericordia" Udine Italy
| | | | - Giulia Garzi
- Ambulatorio di Allergologia UOC Medicina Interna ed Immunologia Clinica, Policlinico Umberto I Roma Italia
| | - Fabio Lodi Rizzini
- Dipartimento Scienze Cliniche e Sperimentali Università Studi Brescia / SSVD Allergologia Spedali Civili Brescia Italy
| | | | | | - Alessandro Marra
- Ambulatorio di Allergologia UOC Medicina ASST Rhodenese, P.O Rho Rho Italia
| | - Stefano Miceli Sopo
- Pediatric Allergy Unit Pediatrics Area Department of Life Sciences and Public Health Policlinico Gemelli Fondazione Universitaria IRCCS Università Cattolica del Sacro Cuore Roma Italia
| | - Francesco Murzilli
- U.O.S.D. di Allergologia Ospedale S.S. Filippo e Nicola Avezzano (AQ) Italy
| | - Eleonora Nucera
- Fondazione Policlinico Universitario A. Gemelli‐ IRCCS Università Cattolica del Sacro Cuore Roma Italy
| | - Elena Pinter
- Ambulatorio di Allergologia UOC Medicina Interna ed Immunologia Clinica, Policlinico Umberto I Roma Italia
| | - Valerio Pravettoni
- UOC General Medicine Immunology and Allergology – IRCCS Foudation Ca’ Granda Ospedale Maggiore Policlinico Milan Italy
| | - Federica Rivolta
- UOC General Medicine Immunology and Allergology – IRCCS Foudation Ca’ Granda Ospedale Maggiore Policlinico Milan Italy
| | - Angela Rizzi
- Fondazione Policlinico Universitario A. Gemelli‐ IRCCS Università Cattolica del Sacro Cuore Roma Italy
| | - Nicoletta Saporiti
- Unit of Immunology Rheumatology, Allergy and Rare Diseases IRCCS Ospedale San Raffaele Milano Italy
| | | | - Danilo Villalta
- Immunologia e Allergologia Ospedale S. Maria degli Angeli Pordenone Italia
| | - Mona‐Rita Yacoub
- Unit of Immunology Rheumatology, Allergy and Rare Diseases IRCCS Ospedale San Raffaele Milano Italy
| | - Giuliana Zisa
- S.S. Allergologia e Immunologia Clinica S.C.D.U. Medicina Interna I ‐ A.O.U. Maggiore della Carità di Novara Novara Italy
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Abstract
This perspective study addresses the main causes of adverse reactions to foods in humans, by taking into account the main allergic reactions that may occur as a result of food ingestion, as well the main allergens present in food and how their allergenicity change as a result of food preparation. In addition, European legislation on food labeling and novel foods was taken into account. The case study of this perspective is on the potential allergenicity of edible flowers as well as evidence of phytochemistry and toxic compounds and the risk associated with their ingestion. Regarding edible flowers, a key issue to address is if they are safe to consume or not. In the framework of the project “Innovative activities for the development of the cross-border supply chain of the edible flower” (ANTEA), we considered 62 different species and varieties of edible flowers. The results obtained by consulting two databases on allergens, COMPRISE and Allergen Nomenclature, marked two alerts for two species of edible flowers selected in the project. Moreover, based on edible flower consumption, about ten grams per serving, and on their protein content, we can also state that the risk of allergic reactions due to edible flower ingestion is very low.
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23
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Yu CH, Tsai JJ, Lin YH, Yu SJ, Liao EC. Identification the Cross-Reactive or Species-Specific Allergens of Tyrophagus putrescentiae and Development Molecular Diagnostic Kits for Allergic Diseases. Diagnostics (Basel) 2020; 10:E665. [PMID: 32887361 PMCID: PMC7555383 DOI: 10.3390/diagnostics10090665] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Revised: 08/26/2020] [Accepted: 08/28/2020] [Indexed: 11/16/2022] Open
Abstract
Mite allergens are considerable factors in the genesis of allergic diseases. The storage mite Tyrophagus putrescentiae (Tp) appears in contaminated foods and household surroundings. The current diagnostic tools for Tp allergy are mostly based on crude extracts and still contain shortcomings. This study aimed to investigate the immunoglobulin E (IgE)- responsiveness profiles of Tp-allergic patients and develop a molecular diagnostic method using recombinant allergens. Allergenic components were characterized as cross-reacting or species-specific allergens, in which the effective combinations of recombinant allergens were developed and analyzed in terms of the prediction accuracy for clinical diagnosis. Seven recombinant allergens were cloned and generated to detect the IgE responsiveness of the Tp allergy. A survey on the prevalence of mite allergy showed there were higher sensitizations with IgE responsiveness to house dust mites (HDM) (78.9-80.9%) than to storage mites Tp (35.6%). Prevalence of sensitization to Tp was higher in elderly subjects. The principal IgE-binding components of Tp were Tyr p 1, Tyr p 2 and Tyr p 3. Prediction accuracy for Tp allergy by IgE-responsiveness combination D (Tyr p 1, Tyr p 2 & Tyr p 3) was with high precision (100%). Avoiding the cross-reactivity of Dermatophagoides pteronyssinus, the prediction accuracy of IgE-responsiveness combination H+ (Tyr p 1, Tyr p 2, Tyr p 3, Tyr p 7, Tyr p 8, Tyr p 10 & Tyr p 20) was suitable for Tp-specific diagnosis. Panels of Tp allergens were generated and developed a diagnostic kit able beneficial to identify IgE-mediated Tp hypersensitivity.
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Affiliation(s)
- Ching-Hsiang Yu
- Department of Medicine, MacKay Medical College, New Taipei City 252, Taiwan;
| | - Jaw-Ji Tsai
- Division of Allergy, Immunology & Rheumatology, Department of Internal Medicine, Asia University Hospital, Taichung 413, Taiwan;
| | - Yi-Hsueh Lin
- Institute of Clinical Medicine, National Yang Ming University, Taipei 112, Taiwan;
| | - Sheng-Jie Yu
- Department of Medical Education and Research, Kaohsiung Veterans General Hospital, Kaohsiung 813, Taiwan;
| | - En-Chih Liao
- Department of Medicine, MacKay Medical College, New Taipei City 252, Taiwan;
- Department of Medicine, Mackay Medical College No. 46, Sec. 3, Zhongzheng Rd., Sanzhi Dist., New Taipei City 252, Taiwan
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24
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Han TJ, Liu M, Huan F, Li MS, Xia F, Chen YY, Chen GX, Cao MJ, Liu GM. Identification and Cross-reactivity Analysis of Sarcoplasmic-Calcium-Binding Protein: A Novel Allergen in Crassostrea angulata. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:5221-5231. [PMID: 32298098 DOI: 10.1021/acs.jafc.0c01543] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Oysters are an important shellfish group known to cause food allergy; however, knowledge of their sensitization components and cross-reactivity is limited. This study aimed to identify a novel allergen in Crassostrea angulata and investigate its cross-reactivity. To this end, a 20 kDa protein was purified from oyster and confirmed to be a sarcoplasmic-calcium-binding protein (SCP) by LC-MS/MS. A 537 bp open reading frame was obtained from oyster SCP total RNA, which encoded 179 amino acids, and was expressed in Escherichia coli. According to the circular dichroism results, digestion assay, and inhibition ELISA, the recombinant SCP (rSCP) exhibited similar physicochemical properties and IgG-binding activity to native SCP. rSCP displayed stronger IgE-binding activity by immunological method. Moreover, a different intensity of cross-reactivity and sequence homology were demonstrated between shellfish species. Collectively, these findings provide novel insight into shellfish allergens, which can be used to aid in the in vitro diagnosis of oyster-sensitized patients.
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Affiliation(s)
- Tian-Jiao Han
- College of Food and Biological Engineering, Xiamen Key Laboratory of Marine Functional Food, Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Jimei University, Xiamen, Fujian 361021, China
| | - Meng Liu
- College of Food and Biological Engineering, Xiamen Key Laboratory of Marine Functional Food, Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Jimei University, Xiamen, Fujian 361021, China
| | - Fei Huan
- College of Food and Biological Engineering, Xiamen Key Laboratory of Marine Functional Food, Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Jimei University, Xiamen, Fujian 361021, China
| | - Meng-Si Li
- College of Food and Biological Engineering, Xiamen Key Laboratory of Marine Functional Food, Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Jimei University, Xiamen, Fujian 361021, China
| | - Fei Xia
- College of Food and Biological Engineering, Xiamen Key Laboratory of Marine Functional Food, Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Jimei University, Xiamen, Fujian 361021, China
| | - Yi-Yu Chen
- College of Food and Biological Engineering, Xiamen Key Laboratory of Marine Functional Food, Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Jimei University, Xiamen, Fujian 361021, China
| | - Gui-Xia Chen
- Women and Children's Hospital Affiliated to Xiamen University, Xiamen, Fujian 361003, China
| | - Min-Jie Cao
- College of Food and Biological Engineering, Xiamen Key Laboratory of Marine Functional Food, Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Jimei University, Xiamen, Fujian 361021, China
| | - Guang-Ming Liu
- College of Food and Biological Engineering, Xiamen Key Laboratory of Marine Functional Food, Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Jimei University, Xiamen, Fujian 361021, China
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25
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Fernández-González M, Álvarez-López S, González-Fernández E, Jesús Aira M, Rodríguez-Rajo FJ. Cross-reactivity between the Betulaceae family and fallout in the real atmospheric aeroallergen load. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 715:136861. [PMID: 32040996 DOI: 10.1016/j.scitotenv.2020.136861] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 01/16/2020] [Accepted: 01/20/2020] [Indexed: 06/10/2023]
Abstract
Betulaceae family is a dominant tree pollen type in the atmosphere at Northwest Spain, being a major cause of allergenic rhinitis or asthma symptoms. Alnus pollen cause symptoms in the 9-20% of the total hay fever sufferers mean while the 41.89% of patients present a positive skin-prick-test for Betula allergens. Aln g1 and Bet v1 aeroallergens belong to PR-10 protein family and are associated to cross-reactivity processes. Airborne pollen and aeroallergens from Alnus and Betula were sampled during their Main Pollen Season from 2016 to 2019. Pollen sampling was conducted by means of a Hirst volumetric trap and aeroallergens were sampled using a Multi Vial Cyclone Sampler. Alnus flowering took place from January to February, with an average duration of 44 days. Betula bloom occurred from April to May with an average pollen season of 33 days. The major innovation of our study was the first detection of Aln g1 allergens in the atmosphere by using Bet v1 antibodies. This fact verified the cross-reactivity between the main allergens of Betula and Alnus pollen. Along the study period, an average of 18 days/year and 14 days/year with high potential risk of allergy due to Alnus pollen and allergen respectively, was registered. For Betula an average of 16 days/year with high potential risk of allergy due to pollen and 22 days for allergen was registered. The main consequence of the successive bloom of both trees would be the so-called "priming effect". Urban population sensitized to Betula pollen could suffer allergic symptoms during winter (as a consequence of Alnus), and in spring with the manifestation of higher symptoms under low birch pollen grain levels in the atmosphere. The traditional information to prevent allergies, such as the airborne pollen concentrations, should be combined with the data of aeroallergen to identify the real allergenic load in the atmosphere.
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Affiliation(s)
- María Fernández-González
- Earth Sciences Institute (ICT), Pole of the Faculty of Sciences, University of Porto, Porto, Portugal; Department of Plant Biology and Soil Sciences, University of Vigo, Vigo, Spain.
| | | | | | - Ma Jesús Aira
- Department of Biology, University of Santiago de Compostela, Santiago de Compostela, Spain
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Ansotegui IJ, Melioli G, Canonica GW, Caraballo L, Villa E, Ebisawa M, Passalacqua G, Savi E, Ebo D, Gómez RM, Luengo Sánchez O, Oppenheimer JJ, Jensen-Jarolim E, Fischer DA, Haahtela T, Antila M, Bousquet JJ, Cardona V, Chiang WC, Demoly PM, DuBuske LM, Ferrer Puga M, Gerth van Wijk R, González Díaz SN, Gonzalez-Estrada A, Jares E, Kalpaklioğlu AF, Kase Tanno L, Kowalski ML, Ledford DK, Monge Ortega OP, Morais Almeida M, Pfaar O, Poulsen LK, Pawankar R, Renz HE, Romano AG, Rosário Filho NA, Rosenwasser L, Sánchez Borges MA, Scala E, Senna GE, Sisul JC, Tang ML, Thong BYH, Valenta R, Wood RA, Zuberbier T. IgE allergy diagnostics and other relevant tests in allergy, a World Allergy Organization position paper. World Allergy Organ J 2020; 13:100080. [PMID: 32128023 PMCID: PMC7044795 DOI: 10.1016/j.waojou.2019.100080] [Citation(s) in RCA: 224] [Impact Index Per Article: 56.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 10/08/2019] [Indexed: 02/06/2023] Open
Abstract
Currently, testing for immunoglobulin E (IgE) sensitization is the cornerstone of diagnostic evaluation in suspected allergic conditions. This review provides a thorough and updated critical appraisal of the most frequently used diagnostic tests, both in vivo and in vitro. It discusses skin tests, challenges, and serological and cellular in vitro tests, and provides an overview of indications, advantages and disadvantages of each in conditions such as respiratory, food, venom, drug, and occupational allergy. Skin prick testing remains the first line approach in most instances; the added value of serum specific IgE to whole allergen extracts or components, as well as the role of basophil activation tests, is evaluated. Unproven, non-validated, diagnostic tests are also discussed. Throughout the review, the reader must bear in mind the relevance of differentiating between sensitization and allergy; the latter entails not only allergic sensitization, but also clinically relevant symptoms triggered by the culprit allergen.
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Key Words
- AAAAI, American Academy of Allergy Asthma and Immunology
- ABA, Allergen Bead Array
- ACAAI, American College of Allergy Asthma and Immunology
- AEC, Allergen Exposure Chambers
- AIT, allergen immunotherapy
- AP, Alkaline Phosphatase
- AU/mL, Allergenic Units milliLiter
- Allergy
- Anti-IgE, Antibody against IgE
- BAT, Basophil Activation Test
- BAU/mL, Biologic Allergenic Units milliLiter
- CBA, Cytometric Bead Array
- CCD, Cross-reactive Carbohydrate Determinants
- CDER, Center for Drug Evaluation and Research (USA)
- CL, Chemiluminescence
- CaFE, Calibrated Fluorescence Enhancement
- DBPCFC, Double-Blind Placebo-Controlled Food Challenge
- Diagnostic strategies
- EAACI, European Academy of Allergy and Immunology
- EIA, Enzyme Immune Assay
- ELISA, Enzyme Linked Immuno Sorbent Analysis
- EMEA, European MEdicine Agencies
- ENPP-3, EctoNucleotide Pyrophosphatase/Phosphodiesterase 3
- FACS, Fluorescence-Activated Cell Sorting
- FDA, Food and Drug Administration (U.S. Department of Health and Human Services)
- FEIA, Fluorescent Enzyme Immunoassays
- FcεRI, High affinity IgE receptor
- H1, Histamine 1 receptor
- H2, Histamine 2 receptor
- HPO, Horseradish Peroxidase
- IDT, Intradermal Test
- ISAC, Immuno-Solid phase Allergen Chip
- IUIS, International Union of Immunological Societies
- IVD, in vitro diagnostic tool
- IgE
- IgE, immunoglobulin E
- In vitro tests
- LAMP-3, Lysosomal-Associated Membrane Protein
- MBAD, Molecule Based Allergy Diagnostics
- MRGPRX2, Mas-related G protein receptor 2
- NIH, National Institutes of Health (USA)
- NMBAs, NeuroMuscular Blocking Agents
- NPA, Negative Percent Agreement
- NSAIDs, Non-Steroidal Anti-Inflammatory Drugs
- PPA, Positive Percent Agreement
- PPT, Prick-Prick Test
- RAST, Radio Allergo Sorbent Test
- SCAR, severe cutaneous adverse drug reactions
- SPT, Skin prick test
- Skin tests
- kUA/L, kilo Units of Allergen/Liter for allergen-specific IgE antibody assays
- mAb, Monoclonal Antibody
- pNPP, p-Nitrophenylphosphate
- sIgE, specific IgE
- w/v, weight /volume
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Affiliation(s)
| | - Giovanni Melioli
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy
| | - Giorgio Walter Canonica
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Personalized Medicine, Asthma and Allergy, Humanitas Research Hospital, Rozzano, Milan, Italy
| | - Luis Caraballo
- Institute for Immunological Research, University of Cartagena, Cartagena, Colombia
| | - Elisa Villa
- Azienda Sanitaria Locale di Vercelli, S.C. Pneumologia, Vercelli, Italia
| | - Motohiro Ebisawa
- Clinical Research Center for Allergy and Rheumatology, Sagamihara National Hospital, Sagamihara, Kanagawa, Japan
| | - Giovanni Passalacqua
- Allergy and Respiratory Diseases, IRCCS Policlinico San Martino, University of Genoa, Genoa, Italy
| | | | - Didier Ebo
- Department of Immunology - Allergology - Rheumatology, Antwerp University Hospital, Antwerp University, Department Immunology and Allergology, AZ Jan Palfijn Gent, Ghent, Belgium
| | | | - Olga Luengo Sánchez
- Allergy Section, Department of Internal Medicine, Vall d’Hebron University Hospital, Barcelona, Spain
| | | | - Erika Jensen-Jarolim
- Institute for Pathophysiology and Allergy Research, Center of Pathophysiology, Infectiology and Immunology, The Interuniversity Messerli Research Institute, University of Veterinary Medicine Vienna, Medical University Vienna, Vienna, Austria
| | - David A. Fischer
- Fischer Medicine Professional Corporation, Barrie, Ontario, Canada
| | - Tari Haahtela
- Skin and Allergy Hospital, University of Helsinki, Helsinki, Finland
| | | | - Jean J. Bousquet
- MACVIA-France, Montpellier, France
- INSERM, Villejuif, France
- Université Versailles St-Quentin-en-Yvelines, Montigny le Bretonneux, France
- Euforea, Brussels, Belgium
- CHU Montpellier, France
| | - Victoria Cardona
- Universitat Autónoma de Barcelona, Hospital Universitario Vall d'Hebron, Servicio de Medicina Interna, Sección de Alergología, Barcelona, Spain
| | - Wen Chin Chiang
- Mount Elizabeth Medical Centre, Chiang Children's Allergy & Asthma Clinic, Singapore, Singapore
| | - Pascal M. Demoly
- University Hospital Montpellier, Montpellier, France
- Sorbonne Université, Paris, France
| | | | - Marta Ferrer Puga
- The Unidad de Educación Médica, Department of Medical Education, School of Medicine, Clinica Universitad de Navarra, Navarra, Spain
| | | | | | | | | | | | | | - Marek L. Kowalski
- Faculty of Medicine, Department of Clinical Immunology & Allergy, Medical University of Łódź, Łódź, Poland
| | | | | | | | - Oliver Pfaar
- Department of Otorhinolaryngology, Head and Neck Surgery, Section of Rhinology and Allergy, University Hospital Marburg, Philipps-Universität Marburg, Marburg, Germany
| | - Lars K. Poulsen
- Gentofte University Hospital, Lab for Allergology, Allergy Clinic, Hellerup, Denmark
| | - Ruby Pawankar
- Nippon Medical School, Dept. of Otolaryngology, Tokyo, Japan
| | - Harald E. Renz
- University Hospital GI & MR GmbH, Institute of Laboratory Medicine & Pathology, Standort Marburg, Marburg, Germany
| | | | | | - Lanny Rosenwasser
- University of Missouri at Kansas City, School of Medicine, Kansas City, MO, USA
| | | | - Enrico Scala
- Experimental Allergy Unit, Istituto Dermopatico dell'Immacolata, Rome, Italy
| | | | | | - Mimi L.K. Tang
- Royal Children's Hospital, Department of Allergy & Immunology, Parkville, Victoria, Australia
| | - Bernard Yu-Hor Thong
- Tan Tock Seng Hospital, Deptartment of Rheumatology, Allergy & Immunology, Singapore, Singapore
| | - Rudolf Valenta
- Division of Immunopathology, Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
- NRC Institute of Immunology FMBA of Russia, Moscow, Russia
- Laboratory of Immunopathology, Department of Clinical Immunology and Allergy, Sechenov First Moscow State Medical University, Moscow, Russia
| | - Robert A. Wood
- Johns Hopkins University School of Medicine, Johns Hopkins Hospital, Baltimore, MD, USA
| | - Torsten Zuberbier
- Campus Charite Mitte, Klinik fur Dermatologie & Allergologie, Berlin, Germany
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Possible sources of Bermuda grass sensitization in Timothy grass allergic subjects. Ann Allergy Asthma Immunol 2020; 124:399-401.e1. [PMID: 31945476 DOI: 10.1016/j.anai.2020.01.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Revised: 12/31/2019] [Accepted: 01/02/2020] [Indexed: 11/23/2022]
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Kim JH, Cho W, An J, Ha EK, Lee W, Lee SW, Lee CH, Hwang S, Shin YH, Han MY. Spectrum of Allergen Sensitization to Food and Inhalant Allergens Across All Ages. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2020; 12:1060-1062. [PMID: 32935495 PMCID: PMC7492507 DOI: 10.4168/aair.2020.12.6.1060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 06/01/2020] [Accepted: 06/05/2020] [Indexed: 11/20/2022]
Affiliation(s)
- Ju Hee Kim
- Department of Pediatrics, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea
| | - WonKyung Cho
- School of Medicine, CHA University, Seongnam, Korea
| | - Jaewoo An
- Department of Pediatrics, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea
| | - Eun Kyo Ha
- Department of Pediatrics, Kangnam Sacred Heart Hospital, Hallym University Medical Center, Seoul, Korea
| | - Wonki Lee
- School of Medicine, CHA University, Seongnam, Korea
| | - Seung Won Lee
- Department of Data Science, Sejong University College of Software Convergence, Seoul, Korea
| | - Chang Ho Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea
| | - Sohyun Hwang
- Department of Pathology, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea
| | - Youn Ho Shin
- Department of Pediatrics, CHA Gangnam Medical Center, CHA University School of Medicine, Seoul, Korea
| | - Man Yong Han
- Department of Pediatrics, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea.
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House-Dust Mite Immunotherapy in Asthma: Uncertainties and Therapeutic Strategies. CURRENT TREATMENT OPTIONS IN ALLERGY 2019. [DOI: 10.1007/s40521-019-00236-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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30
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Zhao Y, Sun X, Marquis CP, Lee NA. Development of a sensitive sandwich ELISA specific to 2S albumin (Ana o 3) as a stable protein marker for cashew nut residue detection in pre-packaged food products. Food Control 2019. [DOI: 10.1016/j.foodcont.2018.09.038] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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31
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Wang J, Vanga SK, McCusker C, Raghavan V. A Comprehensive Review on Kiwifruit Allergy: Pathogenesis, Diagnosis, Management, and Potential Modification of Allergens Through Processing. Compr Rev Food Sci Food Saf 2019; 18:500-513. [PMID: 33336949 DOI: 10.1111/1541-4337.12426] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 12/27/2018] [Accepted: 01/05/2019] [Indexed: 12/22/2022]
Abstract
Kiwifruit is rich in bioactive components including dietary fibers, carbohydrates, natural sugars, vitamins, minerals, omega-3 fatty acids, and antioxidants. These components are beneficial to boost the human immune system and prevent cancer and heart diseases. However, kiwifruit is emerging as one of the most common elicitors of food allergies worldwide. Kiwifruit allergy results from an abnormal immune response to kiwifruit proteins and occur after consuming this fruit. Symptoms range from the oral allergy syndrome (OAS) to the life-threatening anaphylaxis. Thirteen different allergens have been identified in green kiwifruit and, among these allergens, Act d 1, Act d 2, Act d 8, Act d 11, and Act d 12 are defined as the "major allergens." Act d 1 and Act d 2 are ripening-related allergens and are found in abundance in fully ripe kiwifruit. Structures of several kiwifruit allergens may be altered under high temperatures or strong acidic conditions. This review discusses the pathogenesis, clinical features, and diagnosis of kiwifruit allergy and evaluates food processing methods including thermal, ultrasound, and chemical processing which may be used to reduce the allergenicity of kiwifruit. Management and medical treatments for kiwifruit allergy are also summarized.
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Affiliation(s)
- Jin Wang
- Dept. of Bioresource Engineering, Faculty of Agricultural and Environmental Sciences, McGill Univ., Sainte-Anne-de-Bellevue, Quebec, Canada
| | - Sai Kranthi Vanga
- Dept. of Bioresource Engineering, Faculty of Agricultural and Environmental Sciences, McGill Univ., Sainte-Anne-de-Bellevue, Quebec, Canada
| | - Christine McCusker
- Meakins-Christie Laboratories, Research Inst. of the McGill Univ. Health Centre, Montreal, Quebec, Canada
| | - Vijaya Raghavan
- Dept. of Bioresource Engineering, Faculty of Agricultural and Environmental Sciences, McGill Univ., Sainte-Anne-de-Bellevue, Quebec, Canada
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32
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Celakovská J, Bukac J, Ettler K, Vaneckova J, Krcmova I, Ettlerova K, Krejsek J. The occurrence of food hypersensitivity reactions and the relation to the sensitization to grass and trees in atopic dermatitis patients 14 years of age and older. Indian J Dermatol 2019; 64:346-354. [PMID: 31543527 PMCID: PMC6749770 DOI: 10.4103/ijd.ijd_164_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Background: Methods: Results: Conclusion:
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33
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Green BJ, Levetin E, Horner WE, Codina R, Barnes CS, Filley WV. Landscape Plant Selection Criteria for the Allergic Patient. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY-IN PRACTICE 2018; 6:1869-1876. [PMID: 30097356 DOI: 10.1016/j.jaip.2018.05.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 05/15/2018] [Indexed: 11/27/2022]
Abstract
Patients with pollen-related allergies are concerned about the species within their landscape that provoke their symptoms. Allergists are often asked for guidance but few information sources are available to aid patients in the recognition of allergenic plants and strategies to avoid personal exposure to them. Landscaping and horticultural workers also have few reliable guidance references, and what is available usually extols the virtues of the plants rather than their negative features. The aim of this article was to provide the results of the Landscape Allergen Working Group that was formed by the AAAAI Aerobiology Committee, which aimed to fill these existing knowledge gaps and develop guidance on producing a low-allergenic landscape. Within the context that complete pollen avoidance is unrealistic, the workgroup introduces selection criteria, avoidance strategies, and guidance on low-allergenic plants that could be selected by patients to reduce the overall pollen burden in their landscape environment. Specific focus is placed on entomophilous plants, which require insects as dispersal vectors and generally produce lower quantities of pollen, compared with anemophilous (wind-pollinated) species. Other biological hazards that can be encountered while performing landscaping activities are additionally reviewed and avoidance methods presented with the aim of protecting gardeners, and workers in the landscape and horticulture industries. The guidance presented in this article will ultimately be a helpful resource for the allergist and assist in engaging patients who are seeking to reduce the burden of allergen in their landscape environment.
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Affiliation(s)
- Brett J Green
- Allergy and Clinical Immunology Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Morgantown, WVa.
| | - Estelle Levetin
- Department of Biological Science, University of Tulsa, Tulsa, Okla
| | | | | | - Charles S Barnes
- Division of Allergy/Immunology, Children's Mercy Hospital, Kansas City, Mo
| | - Warren V Filley
- Oklahoma Allergy & Asthma Clinic, University of Oklahoma Health Science Center, Oklahoma City, Okla
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Rolland JM, Varese NP, Abramovitch JB, Anania J, Nugraha R, Kamath S, Hazard A, Lopata AL, O'Hehir RE. Effect of Heat Processing on IgE Reactivity and Cross-Reactivity of Tropomyosin and Other Allergens of Asia-Pacific Mollusc Species: Identification of Novel Sydney Rock Oyster Tropomyosin Sac g 1. Mol Nutr Food Res 2018; 62:e1800148. [PMID: 29756679 PMCID: PMC6099307 DOI: 10.1002/mnfr.201800148] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 04/17/2018] [Indexed: 01/24/2023]
Abstract
SCOPE Shellfish allergy is an increasing global health priority, frequently affecting adults. Molluscs are an important shellfish group causing food allergy but knowledge of their allergens and cross-reactivity is limited. Optimal diagnosis of mollusc allergy enabling accurate advice on food avoidance is difficult. Allergens of four frequently ingested Asia-Pacific molluscs are characterized: Sydney rock oyster (Saccostrea glomerata), blue mussel (Mytilus edulis), saucer scallop (Amusium balloti), and southern calamari (Sepioteuthis australis), examining cross-reactivity between species and with blue swimmer crab tropomyosin, Por p 1. METHODS AND RESULTS IgE ELISA showed that cooking increased IgE reactivity of mollusc extracts and basophil activation confirmed biologically relevant IgE reactivity. Immunoblotting demonstrated strong IgE reactivity of several proteins including one corresponding to heat-stable tropomyosin in all species (37-40 kDa). IgE-reactive Sydney rock oyster proteins were identified by mass spectrometry, and the novel major oyster tropomyosin allergen was cloned, sequenced, and designated Sac g 1 by the IUIS. Oyster extracts showed highest IgE cross-reactivity with other molluscs, while mussel cross-reactivity was weakest. Inhibition immunoblotting demonstrated high cross-reactivity between tropomyosins of mollusc and crustacean species. CONCLUSION These findings inform novel approaches for reliable diagnosis and improved management of mollusc allergy.
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Affiliation(s)
- Jennifer M. Rolland
- Department of Immunology and PathologyMonash UniversityMelbourneVictoriaAustralia,Department of AllergyClinical Immunology and Respiratory MedicineCentral Clinical SchoolMonash UniversityMelbourneVictoriaAustralia
| | - Nirupama P. Varese
- Department of Immunology and PathologyMonash UniversityMelbourneVictoriaAustralia,Department of AllergyClinical Immunology and Respiratory MedicineCentral Clinical SchoolMonash UniversityMelbourneVictoriaAustralia
| | - Jodie B. Abramovitch
- Department of Immunology and PathologyMonash UniversityMelbourneVictoriaAustralia,Department of AllergyClinical Immunology and Respiratory MedicineCentral Clinical SchoolMonash UniversityMelbourneVictoriaAustralia
| | - Jessica Anania
- Department of Immunology and PathologyMonash UniversityMelbourneVictoriaAustralia,Department of AllergyClinical Immunology and Respiratory MedicineCentral Clinical SchoolMonash UniversityMelbourneVictoriaAustralia
| | - Roni Nugraha
- Centre for Biodiscovery and Molecular Development of TherapeuticsMolecular Allergy Research LaboratoryJames Cook UniversityTownsvilleAustralia,Department of Aquatic Product TechnologyBogor Agricultural UniversityBogorIndonesia
| | - Sandip Kamath
- Centre for Biodiscovery and Molecular Development of TherapeuticsMolecular Allergy Research LaboratoryJames Cook UniversityTownsvilleAustralia
| | - Anita Hazard
- Department of AllergyClinical Immunology and Respiratory MedicineCentral Clinical SchoolMonash UniversityMelbourneVictoriaAustralia
| | - Andreas L. Lopata
- Centre for Biodiscovery and Molecular Development of TherapeuticsMolecular Allergy Research LaboratoryJames Cook UniversityTownsvilleAustralia
| | - Robyn E. O'Hehir
- Department of Immunology and PathologyMonash UniversityMelbourneVictoriaAustralia,Department of AllergyClinical Immunology and Respiratory MedicineCentral Clinical SchoolMonash UniversityMelbourneVictoriaAustralia
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Valenta R, Karaulov A, Niederberger V, Gattinger P, van Hage M, Flicker S, Linhart B, Campana R, Focke-Tejkl M, Curin M, Eckl-Dorna J, Lupinek C, Resch-Marat Y, Vrtala S, Mittermann I, Garib V, Khaitov M, Valent P, Pickl WF. Molecular Aspects of Allergens and Allergy. Adv Immunol 2018; 138:195-256. [PMID: 29731005 DOI: 10.1016/bs.ai.2018.03.002] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Immunoglobulin E (IgE)-associated allergy is the most common immune disorder. More than 30% of the population suffer from symptoms of allergy which are often severe, disabling, and life threatening such as asthma and anaphylaxis. Population-based birth cohort studies show that up to 60% of the world population exhibit IgE sensitization to allergens, of which most are protein antigens. Thirty years ago the first allergen-encoding cDNAs have been isolated. In the meantime, the structures of most of the allergens relevant for disease in humans have been solved. Here we provide an update regarding what has been learned through the use of defined allergen molecules (i.e., molecular allergology) and about mechanisms of allergic disease in humans. We focus on new insights gained regarding the process of sensitization to allergens, allergen-specific secondary immune responses, and mechanisms underlying allergic inflammation and discuss open questions. We then show how molecular forms of diagnosis and specific immunotherapy are currently revolutionizing diagnosis and treatment of allergic patients and how allergen-specific approaches may be used for the preventive eradication of allergy.
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Affiliation(s)
- Rudolf Valenta
- Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria; NRC Institute of Immunology FMBA of Russia, Moscow, Russia.
| | - Alexander Karaulov
- Laboratory of Immunopathology, Department of Clinical Immunology and Allergy, Sechenov First Moscow State Medical University, Moscow, Russia
| | - Verena Niederberger
- Department of Otorhinolaryngology, Medical University of Vienna, Vienna, Austria
| | - Pia Gattinger
- Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Marianne van Hage
- Department of Medicine Solna, Immunology and Allergy Unit, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Sabine Flicker
- Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Birgit Linhart
- Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Raffaela Campana
- Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Margarete Focke-Tejkl
- Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Mirela Curin
- Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Julia Eckl-Dorna
- Department of Otorhinolaryngology, Medical University of Vienna, Vienna, Austria
| | - Christian Lupinek
- Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Yvonne Resch-Marat
- Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Susanne Vrtala
- Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Irene Mittermann
- Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Victoria Garib
- Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria; International Network of Universities for Molecular Allergology and Immunology, Vienna, Austria
| | - Musa Khaitov
- NRC Institute of Immunology FMBA of Russia, Moscow, Russia
| | - Peter Valent
- Department of Internal Medicine I, Division of Hematology & Hemostaseology, Medical University of Vienna, Vienna, Austria; Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Vienna, Austria
| | - Winfried F Pickl
- Institute of Immunology, Medical University of Vienna, Vienna, Austria
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Distinguishing allergens from non-allergenic homologues using Physical-Chemical Property (PCP) motifs. Mol Immunol 2018; 99:1-8. [PMID: 29627609 DOI: 10.1016/j.molimm.2018.03.022] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 03/22/2018] [Accepted: 03/27/2018] [Indexed: 02/07/2023]
Abstract
Quantitative guidelines to distinguish allergenic proteins from related, but non-allergenic ones are urgently needed for regulatory agencies, biotech companies and physicians. In a previous study, we found that allergenic proteins populate a relatively small number of protein families, as characterized by the Pfam database. However, these families also contain non-allergenic proteins, meaning that allergenic determinants must lie within more discrete regions of the sequence. Thus, new methods are needed to discriminate allergenic proteins within those families. Physical-Chemical Properties (PCP)-motifs specific for allergens within a Pfam class were determined for 17 highly populated protein domains. A novel scoring method based on PCP-motifs that characterize known allergenic proteins within these families was developed, and validated for those domains. The motif scores distinguished sequences of allergens from a large selection of 80,000 randomly selected non-allergenic sequences. The motif scores for the birch pollen allergen (Bet v 1) family, which also contains related fruit and nut allergens, correlated better than global sequence similarities with clinically observed cross-reactivities among those allergens. Further, we demonstrated that the average scores of allergen specific motifs for allergenic profilins are significantly different from the scores of non-allergenic profilins. Several of the selective motifs coincide with experimentally determined IgE epitopes of allergenic profilins. The motifs also discriminated allergenic pectate lyases, including Jun a 1 from mountain cedar pollen, from similar proteins in the human microbiome, which can be assumed to be non-allergens. The latter lacked key motifs characteristic of the known allergens, some of which correlate with known IgE binding sites.
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37
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Ghitarrini S, Pierboni E, Rondini C, Tedeschini E, Tovo GR, Frenguelli G, Albertini E. New biomolecular tools for aerobiological monitoring: Identification of major allergenic Poaceae species through fast real-time PCR. Ecol Evol 2018; 8:3996-4010. [PMID: 29721274 PMCID: PMC5916283 DOI: 10.1002/ece3.3891] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 01/11/2018] [Accepted: 01/12/2018] [Indexed: 11/06/2022] Open
Abstract
Grasses (Poaceae) are very common plants, which are widespread in all environments and urban areas. Despite their economical importance, they can represent a problem to humans due to their abundant production of allergenic pollen. Detailed information about the pollen season for these species is needed in order to plan adequate therapies and to warn allergic people about the risks they take in certain areas at certain moments. Moreover, precise identification of the causative species and their allergens is necessary when the patient is treated with allergen‐specific immunotherapy. The intrafamily morphological similarity of grass pollen grains makes it impossible to distinguish which particular species is present in the atmosphere at a given moment. This study aimed at developing new biomolecular tools to analyze aerobiological samples and identifying major allergenic Poaceae taxa at subfamily or species level, exploiting fast real‐time PCR. Protocols were tested for DNA extraction from pollen sampled with volumetric and gravimetric methods. A fragment of the matK plastidial gene was amplified and sequenced in Poaceae species known to have high allergological impact. Species‐ and subfamily‐specific primer–probe systems were designed and tested in fast real‐time PCRs to evaluate the presence of these taxa in aerobiological pollen samples. Species‐specific systems were obtained for four of five studied species. A primer–probe set was also proposed for the detection of Pooideae (a grass subfamily that includes also major cereal grains) in aerobiological samples, as this subfamily includes species carrying both grass allergens from groups 1 and 5. These, among the 11 groups in which grass pollen allergens are classified, are considered responsible for the most frequent and severe symptoms.
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Affiliation(s)
- Sofia Ghitarrini
- Department of Agricultural, Food and Environmental Sciences (DSA3) University of Perugia Perugia Italy
| | - Elisa Pierboni
- Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche (IZSUM) Perugia Italy
| | - Cristina Rondini
- Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche (IZSUM) Perugia Italy
| | - Emma Tedeschini
- Department of Agricultural, Food and Environmental Sciences (DSA3) University of Perugia Perugia Italy
| | - Gloria R Tovo
- Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche (IZSUM) Perugia Italy
| | - Giuseppe Frenguelli
- Department of Agricultural, Food and Environmental Sciences (DSA3) University of Perugia Perugia Italy
| | - Emidio Albertini
- Department of Agricultural, Food and Environmental Sciences (DSA3) University of Perugia Perugia Italy
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García-Mozo H. Poaceae pollen as the leading aeroallergen worldwide: A review. Allergy 2017; 72:1849-1858. [PMID: 28543717 DOI: 10.1111/all.13210] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/18/2017] [Indexed: 01/15/2023]
Abstract
The Poaceae family comprises over 12 000 wind-pollinated species, which release large amounts of pollen into the atmosphere. Poaceae pollen is currently regarded as the leading airborne biological pollutant and the chief cause of pollen allergy worldwide. Sensitization rates vary by country, and those variations are reviewed here. Grass pollen allergens are grouped according to their protein structure and function. In Poaceae, although species belonging to different subfamilies are characterized by distinct allergen subsets, there is a considerable degree of cross-reactivity between many species. Cross-reactivity between grass pollen protein and fresh fruit pan-allergens is associated with the appearance of food allergies. The additional influence of urban pollution may prompt a more severe immunological response. The timing and the intensity of the pollen season are governed by species genetics, but plant phenology is also influenced by climate; as a result, climate changes may affect airborne pollen concentrations. This article reviews the findings of worldwide research which has highlighted the major impact of climate change on plant phenology and also on the prevalence and severity of allergic disease.
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Affiliation(s)
- H. García-Mozo
- Department of Botany, Ecology and Plant Physiology; University of Córdoba; Córdoba Spain
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Shahali Y, Sutra J, Hilger C, Swiontek K, Haddad I, Vinh J, Guilloux L, Charpin D, Sénéchal H, Poncet P. Identification of a polygalacturonase (Cup s 2) as the major CCD-bearing allergen in Cupressus sempervirens pollen. Allergy 2017; 72:1806-1810. [PMID: 28439939 DOI: 10.1111/all.13191] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/20/2017] [Indexed: 11/28/2022]
Abstract
As IgE glyco-epitopes, also referred to as cross-reactive carbohydrate determinants (CCDs), can share significant structural homologies between different plants, they are prone to extensive cross-reactivity among allergen pollen extracts. Here, cypress pollen allergens, especially a polygalacturonase (PG), were further characterized using double one-dimensional electrophoresis (D1-DE). The presence of specific IgE directed against CCDs was investigated by bromelain IgE inhibition and concanavalin A binding assays using sera of cypress pollen-sensitized patients. Our results showed that IgE reactivity to CCDs in Cupressus sempervirens pollen extracts is mainly related to bromelain-type epitopes of a newly identified cypress PG. This glycoprotein has been further characterized through an immunoproteomic approach and officially indexed as Cup s 2 by the WHO/IUIS allergen nomenclature. Cup s 2 could thus be associated with the increased prevalence of IgE reactivity to cypress pollen extracts because of CCD interference.
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Affiliation(s)
- Y. Shahali
- Department of Biochemistry, Allergy & Environment Team Armand Trousseau Children Hospital, AP‐HP Paris France
- Razi Vaccine and Serum Research Institute Agricultural Research, Education and Extension Organization (AREEO) Karaj Iran
| | - J.‐P. Sutra
- Department of Biochemistry, Allergy & Environment Team Armand Trousseau Children Hospital, AP‐HP Paris France
| | - C. Hilger
- Department of Infection and Immunity Luxembourg Institute of Health Esch‐sur‐Alzette Luxembourg
| | - K. Swiontek
- Department of Infection and Immunity Luxembourg Institute of Health Esch‐sur‐Alzette Luxembourg
| | - I. Haddad
- ESPCI ParisTech SMBP USR CNRS 3149 Paris France
| | - J. Vinh
- ESPCI ParisTech SMBP USR CNRS 3149 Paris France
| | - L. Guilloux
- Eurofins‐Biomnis Bio‐medical analysis laboratory Lyon France
| | - D. Charpin
- Department of Pneumology and Allergy AP‐HM and Inserm, U1067 CNRS UMR 7333, Aix‐Marseille University Marseille France
| | - H. Sénéchal
- Department of Biochemistry, Allergy & Environment Team Armand Trousseau Children Hospital, AP‐HP Paris France
| | - P. Poncet
- Department of Biochemistry, Allergy & Environment Team Armand Trousseau Children Hospital, AP‐HP Paris France
- Center for Innovation and Technological Research Pasteur Institute Paris France
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Allergy genuflection? It's surmount with special focus on ear, nose and throat. Allergol Immunopathol (Madr) 2017; 45:592-601. [PMID: 28161280 DOI: 10.1016/j.aller.2016.10.010] [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: 08/26/2016] [Accepted: 10/31/2016] [Indexed: 11/23/2022]
Abstract
The system that protects body from infectious agents is immune system. On occasions, the system seldom reacts with some foreign particles and causes allergy. Allergies of the ear, nose and throat (ENT) often have serious consequences, including impairment and emotional strain that lowers the quality of life of patients. This is further responsible for the common cold, cough, tonsillitis, dermal infection, chest pain and asthma-like conditions which disturb one's day to day life. The present review enlightens some common ENT allergies which one can suffer more frequently in one's lifetime, and ignorance leads to making the condition chronic. Information regarding pathophysiology and the management of ENT allergy by this review could help clinicians and common people to better understand the circumstances and treatment of ENT allergy.
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Ohn J, Paik SH, Doh EJ, Park HS, Yoon HS, Cho S. Allergen Sensitization Pattern by Sex: A Cluster Analysis in Korea. Ann Dermatol 2017; 29:735-741. [PMID: 29200762 PMCID: PMC5705355 DOI: 10.5021/ad.2017.29.6.735] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Revised: 03/03/2017] [Accepted: 03/29/2017] [Indexed: 01/12/2023] Open
Abstract
Background Allergens tend to sensitize simultaneously. Etiology of this phenomenon has been suggested to be allergen cross-reactivity or concurrent exposure. However, little is known about specific allergen sensitization patterns. Objective To investigate the allergen sensitization characteristics according to gender. Methods Multiple allergen simultaneous test (MAST) is widely used as a screening tool for detecting allergen sensitization in dermatologic clinics. We retrospectively reviewed the medical records of patients with MAST results between 2008 and 2014 in our Department of Dermatology. A cluster analysis was performed to elucidate the allergen-specific immunoglobulin (Ig)E cluster pattern. Results The results of MAST (39 allergen-specific IgEs) from 4,360 cases were analyzed. By cluster analysis, 39items were grouped into 8 clusters. Each cluster had characteristic features. When compared with female, the male group tended to be sensitized more frequently to all tested allergens, except for fungus allergens cluster. Conclusion The cluster and comparative analysis results demonstrate that the allergen sensitization is clustered, manifesting allergen similarity or co-exposure. Only the fungus cluster allergens tend to sensitize female group more frequently than male group.
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Affiliation(s)
- Jungyoon Ohn
- Department of Dermatology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - Seung Hwan Paik
- Department of Dermatology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - Eun Jin Doh
- Department of Dermatology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - Hyun-Sun Park
- Department of Dermatology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - Hyun-Sun Yoon
- Department of Dermatology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - Soyun Cho
- Department of Dermatology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
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Abstract
PURPOSE OF REVIEW The presence of IgE cross-reactivity between peanut allergens and allergens from other legumes and tree nuts has been demonstrated, but the identification of the involved individual allergens is still limited. The aim of this review is to describe new allergenic findings, of potential relevance for cross-reactivity among peanut and lupin. RECENT FINDINGS Seventeen allergens of peanut have been included in the official allergen nomenclature database to date. Lupin sensitization has been observed in 15-20% of individuals with known peanut allergy, The majority of lupin seed proteins are comprised of α-conglutins (legumin-like) and β-conglutins (vicilin-like), and to a lesser extent γ-conglutins (vicilin-like) and δ-conglutins (2S albumins). Several molecules may fuel peanut-lupin cross-reactivity. Awareness among physicians and general public could avoid unexpected allergic reactions. However, these do not appear frequent and no data suggest a precautionary labelling of lupin in foods.
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Saltabayeva U, Garib V, Morenko M, Rosenson R, Ispayeva Z, Gatauova M, Zulus L, Karaulov A, Gastager F, Valenta R. Greater Real-Life Diagnostic Efficacy of Allergen Molecule-Based Diagnosis for Prescription of Immunotherapy in an Area with Multiple Pollen Exposure. Int Arch Allergy Immunol 2017; 173:93-98. [PMID: 28654920 DOI: 10.1159/000477442] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Accepted: 05/11/2017] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Allergen molecule-based diagnosis has been suggested to facilitate the identification of disease-causing allergen sources and the prescription of allergen-specific immunotherapy (AIT). The aim of the current study was to compare allergen molecule-based IgE serology with allergen extract-based skin testing for the identification of the disease-causing allergen sources. The study was conducted in an area where patients are exposed to pollen from multiple sources (trees, grasses, and weeds) at the same time to compare the diagnostic efficiency of the 2 forms of diagnosis. METHODS Patients from Astana, Kazakhstan, who suffered from pollen-induced allergy (n = 95) were subjected to skin prick testing (SPT) with a local panel of tree pollen, grass pollen, and weed pollen allergen extracts and IgE antibodies specific for marker allergen molecules (nArt v 1, nArt v 3, rAmb a 1, rPhl p 1, rPhl p 5, rBet v 1) were measured by ImmunoCAP. Direct and indirect costs for diagnosis based on SPT and marker allergen-based IgE serology as well as direct costs for immunotherapy depending on SPT and serological test results were calculated. RESULTS The costs for SPT-based diagnosis per patient were lower than the costs for allergen molecule-based IgE serology. However, allergen molecule-based serology was more precise in detecting the disease-causing allergen sources. A lower number of immunotherapy treatments (n = 119) was needed according to molecular diagnosis as compared to extract-based diagnosis (n = 275), which considerably reduced the total costs for diagnosis and for a 3-year treatment from EUR 1,112.30 to 521.77 per patient. CONCLUSIONS The results from this real-life study show that SPT is less expensive than allergen molecule-based diagnostic testing, but molecular diagnosis allowed more precise prescription of immunotherapy which substantially reduced treatment costs and combined costs for diagnosis and treatment.
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Affiliation(s)
- Ulbosin Saltabayeva
- International Network of Universities for Molecular Allergololgy and Immunology, Vienna, Austria
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Negi SS, Braun W. Cross-React: a new structural bioinformatics method for predicting allergen cross-reactivity. Bioinformatics 2017; 33:1014-1020. [PMID: 28062447 DOI: 10.1093/bioinformatics/btw767] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Accepted: 12/01/2016] [Indexed: 11/14/2022] Open
Abstract
The phenomenon of cross-reactivity between allergenic proteins plays an important role to understand how the immune system recognizes different antigen proteins. Allergen proteins are known to cross-react if their sequence comparison shows a high sequence identity which also implies that the proteins have a similar 3D fold. In such cases, linear sequence alignment methods are frequently used to predict cross-reactivity between allergenic proteins. However, the prediction of cross-reactivity between distantly related allergens continues to be a challenging task. To overcome this problem, we developed a new structure-based computational method, Cross-React, to predict cross-reactivity between allergenic proteins available in the Structural Database of Allergens (SDAP). Our method is based on the hypothesis that we can find surface patches on 3D structures of potential allergens with amino acid compositions similar to an epitope in a known allergen. We applied the Cross-React method to a diverse set of seven allergens, and successfully identified several cross-reactive allergens with high to moderate sequence identity which have also been experimentally shown to cross-react. Based on these findings, we suggest that Cross-React can be used as a predictive tool to assess protein allergenicity and cross-reactivity. Availability and Implementation : Cross-React is available at: http://curie.utmb.edu/Cross-React.html. Contact ssnegi@utmb.edu.
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Comparative and Evolutionary Analysis of Grass Pollen Allergens Using Brachypodium distachyon as a Model System. PLoS One 2017; 12:e0169686. [PMID: 28103252 PMCID: PMC5245863 DOI: 10.1371/journal.pone.0169686] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Accepted: 12/19/2016] [Indexed: 11/23/2022] Open
Abstract
Comparative genomics have facilitated the mining of biological information from a genome sequence, through the detection of similarities and differences with genomes of closely or more distantly related species. By using such comparative approaches, knowledge can be transferred from the model to non-model organisms and insights can be gained in the structural and evolutionary patterns of specific genes. In the absence of sequenced genomes for allergenic grasses, this study was aimed at understanding the structure, organisation and expression profiles of grass pollen allergens using the genomic data from Brachypodium distachyon as it is phylogenetically related to the allergenic grasses. Combining genomic data with the anther RNA-Seq dataset revealed 24 pollen allergen genes belonging to eight allergen groups mapping on the five chromosomes in B. distachyon. High levels of anther-specific expression profiles were observed for the 24 identified putative allergen-encoding genes in Brachypodium. The genomic evidence suggests that gene encoding the group 5 allergen, the most potent trigger of hay fever and allergic asthma originated as a pollen specific orphan gene in a common grass ancestor of Brachypodium and Triticiae clades. Gene structure analysis showed that the putative allergen-encoding genes in Brachypodium either lack or contain reduced number of introns. Promoter analysis of the identified Brachypodium genes revealed the presence of specific cis-regulatory sequences likely responsible for high anther/pollen-specific expression. With the identification of putative allergen-encoding genes in Brachypodium, this study has also described some important plant gene families (e.g. expansin superfamily, EF-Hand family, profilins etc) for the first time in the model plant Brachypodium. Altogether, the present study provides new insights into structural characterization and evolution of pollen allergens and will further serve as a base for their functional characterization in related grass species.
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McKenna OE, Asam C, Araujo GR, Roulias A, Goulart LR, Ferreira F. How relevant is panallergen sensitization in the development of allergies? Pediatr Allergy Immunol 2016; 27:560-8. [PMID: 27129102 PMCID: PMC5006871 DOI: 10.1111/pai.12589] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/27/2016] [Indexed: 12/21/2022]
Abstract
Panallergens comprise various protein families of plant as well as animal origin and are responsible for wide IgE cross-reactivity between related and unrelated allergenic sources. Such cross-reactivities include reactions between various pollen sources, pollen and plant-derived foods as well as invertebrate-derived inhalants and foodstuff. Here, we provide an overview on the most clinically relevant panallergens from plants (profilins, polcalcins, non-specific lipid transfer proteins, pathogenesis-related protein family 10 members) and on the prominent animal-derived panallergen family, tropomyosins. In addition, we explore the role of panallergens in the sensitization process and progress of the allergic disease. Emphasis is given on epidemiological aspects of panallergen sensitization and clinical manifestations. Finally, the issues related to diagnosis and therapy of patients sensitized to panallergens are outlined, and the use of panallergens as predictors for cross-reactive allergy and as biomarkers for disease severity is discussed.
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Affiliation(s)
- Olivia E McKenna
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Claudia Asam
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Galber R Araujo
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria.,Laboratory of Nanobiotechnology, Institute of Genetics and Biochemistry, Federal University of Uberlandia, Uberlandia, Brazil
| | - Anargyros Roulias
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Luiz R Goulart
- Laboratory of Nanobiotechnology, Institute of Genetics and Biochemistry, Federal University of Uberlandia, Uberlandia, Brazil.,Department of Medical Microbiology and Immunology, University of California, Davis, CA, USA
| | - Fatima Ferreira
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
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Vara A, Fernández-González M, Aira MJ, Rodríguez-Rajo FJ. Fraxinus pollen and allergen concentrations in Ourense (South-western Europe). ENVIRONMENTAL RESEARCH 2016; 147:241-248. [PMID: 26901381 DOI: 10.1016/j.envres.2016.02.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 02/10/2016] [Accepted: 02/11/2016] [Indexed: 06/05/2023]
Abstract
In temperate zones of North-Central Europe the sensitization to ash pollen is a recognized problem, also extended to the Northern areas of the Mediterranean basin. Some observations in Switzerland suggest that ash pollen season could be as important as birch pollen period. The allergenic significance of this pollen has been poorly studied in Southern Europe as the amounts of ash pollen are low. Due to the high degree of family relationship with the olive pollen major allergen (backed by a sequence identity of 88%), the Fraxinus pollen could be a significant cause of early respiratory allergy in sensitized people to olive pollen as consequence of cross-reactivity processes. Ash tree flowers in the Northwestern Spain during the winter months. The atmospheric presence of Ole e 1-like proteins (which could be related with the Fra a 1 presence) can be accurately detected using Ole e 1 antibodies. The correlation analysis showed high Spearman correlation coefficients between pollen content and rainfall (R(2)=-0.333, p<0.01) or allergen concentration and maximum temperature (R(2)=-0.271, p<0.01). In addiction CCA analysis showed not significant differences (p<0.05) between the component 1 and 2 variables. PCFA analysis plots showed that the allergen concentrations are related to the presence of the Fraxinus pollen in the air, facilitating the wind speed its submicronic allergen proteins dispersion. In order to forecast the Fraxinus allergy risk periods, two regression equations were developed with Adjusted R(2) values around 0.48-0.49. The t-test for dependent samples shows no significant differences between the observed data and the estimated by the equations. The combination of the airborne pollen content and the allergen quantification must be assessed in the epidemiologic study of allergic respiratory diseases.
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Affiliation(s)
- A Vara
- Department of Plant Biology and Soil Sciences, University of Vigo, Campus Ourense, Spain
| | - M Fernández-González
- Department of Plant Biology and Soil Sciences, University of Vigo, Campus Ourense, Spain
| | - M J Aira
- Departament of Botany, University of Santiago, Campus South, Santiago of Compostela, Spain
| | - F J Rodríguez-Rajo
- Department of Plant Biology and Soil Sciences, University of Vigo, Campus Ourense, Spain.
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San Nicoló M, Braun T, Eder K, Berghaus A, Gröger M. Clinical Relevance of IgE to Profilin and/or Polcalcin in Pollen-Sensitized Patients. Int Arch Allergy Immunol 2016; 169:101-7. [PMID: 27042855 DOI: 10.1159/000444279] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 01/20/2016] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Component-resolved diagnostics is gaining importance in allergy diagnostics. Allergen extracts contain components with different rates of prevalence and clinical relevance, which can be subdivided at molecular level into major and minor allergens. Clinical complaints are usually triggered by major allergens, while the role of sensitization to the panallergens profilin and polcalcin still remains unclear. METHODS Eighty-six patients from southern Bavaria with sensitization to the panallergens profilin (Bet v 2/Phl p 12) and/or polcalcin (Bet v 4/Phl p 7) were examined in regard to their sensitization to the 4 main botanic denominations Betulaceae, Oleaceae, Poaceae and Asteraceae by skin prick test and measurement of specific immunoglobulin E antibodies to natural allergen extracts as well as major allergen components rPhl p 1/5, rBet v 1, rOle e 1 and nArt v 1. Sensitization was rated as clinically relevant or irrelevant depending on anamnesis or intranasal allergen challenge. RESULTS Regarding the 4 botanic denominations, there was no significant difference in the incidence of sensitization to the panallergens profilin, polcalcin or both. The sensitization pattern does not alter when subdividing the cohort into clinically relevant and silent sensitization. We did not find clinically symptomatic sensitization to panallergens without cosensitization to a major allergen. CONCLUSIONS Our results suggest that sole sensitization to panallergens seems to have no clinical relevance in allergic rhinoconjunctivitis. Clinical complaints seem to be triggered manly by major allergens. Thus, component-resolved allergy diagnostics is crucial in the diagnosis and treatment of polysensitized patients.
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Affiliation(s)
- Marion San Nicoló
- Department of Otorhinolaryngology, Head and Neck Surgery, Ludwig Maximilian University Munich, Munich, Germany
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Gabriel MF, Postigo I, Tomaz CT, Martínez J. Alternaria alternata allergens: Markers of exposure, phylogeny and risk of fungi-induced respiratory allergy. ENVIRONMENT INTERNATIONAL 2016; 89-90:71-80. [PMID: 26826364 DOI: 10.1016/j.envint.2016.01.003] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2015] [Revised: 01/07/2016] [Accepted: 01/10/2016] [Indexed: 05/25/2023]
Abstract
Alternaria alternata spores are considered a well-known biological contaminant and a very common potent aeroallergen source that is found in environmental samples. The most intense exposure to A. alternata allergens is likely to occur outdoors; however, Alternaria and other allergenic fungi can colonize in indoor environments and thereby increase the fungal aeroallergen exposure levels. A consequence of human exposure to fungal aeroallergens, sensitization to A. alternata, has been unequivocally associated with increased asthma severity. Among allergenic proteins described in this fungal specie, the major allergen, Alt a 1, has been reported as the main elicitor of airborne allergies in patients affected by a mold allergy and considered a marker of primary sensitization to A. alternata. Moreover, A. alternata sensitization seems to be a triggering factor in the development of poly-sensitization, most likely because of the capability of A. alternata to produce, in addition to Alt a 1, a broad and complex array of cross-reactive allergens that present homologs in several other allergenic sources. The study and understanding of A. alternata allergen information may be the key to explaining why sensitization to A. alternata is a risk factor for asthma and also why the severity of asthma is associated to this mold. Compared to other common environmental allergenic sources, such as pollens and dust mites, fungi are reported to be neglected and underestimated. The rise of the A. alternata allergy has enabled more research into the role of this fungal specie and its allergenic components in the induction of IgE-mediated respiratory diseases. Indeed, recent research on the identification and characterization of A. alternata allergens has allowed for the consideration of new perspectives in the categorization of allergenic molds, assessment of exposure and diagnosis of fungi-induced allergies.
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Affiliation(s)
- Marta F Gabriel
- Department of Immunology, Microbiology and Parasitology, Faculty of Pharmacy and Laboratory of Parasitology and Allergy, Lascaray Research Centre, University of the Basque Country, Vitoria, Spain; Department of Chemistry and CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - Idoia Postigo
- Department of Immunology, Microbiology and Parasitology, Faculty of Pharmacy and Laboratory of Parasitology and Allergy, Lascaray Research Centre, University of the Basque Country, Vitoria, Spain
| | - Cândida T Tomaz
- Department of Chemistry and CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - Jorge Martínez
- Department of Immunology, Microbiology and Parasitology, Faculty of Pharmacy and Laboratory of Parasitology and Allergy, Lascaray Research Centre, University of the Basque Country, Vitoria, Spain.
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50
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Orange proteomic fingerprinting: From fruit to commercial juices. Food Chem 2016; 196:739-49. [DOI: 10.1016/j.foodchem.2015.10.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Revised: 09/24/2015] [Accepted: 10/01/2015] [Indexed: 10/23/2022]
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