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Knyziak-Mędrzycka I, Majsiak E, Gromek W, Kozłowska D, Swadźba J, Bierła JB, Kurzawa R, Cukrowska B. The Sensitization Profile for Selected Food Allergens in Polish Children Assessed with the Use of a Precision Allergy Molecular Diagnostic Technique. Int J Mol Sci 2024; 25:825. [PMID: 38255900 PMCID: PMC10815771 DOI: 10.3390/ijms25020825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 12/27/2023] [Accepted: 01/05/2024] [Indexed: 01/24/2024] Open
Abstract
Individual populations show a variety of sensitization patterns, which may be associated with the geographic region, climate, dietary habits, or ways of preparing food. The purpose of this study was to comprehensively assess the food allergy sensitization profile in Polish children, particularly to eight food allergens (so-called "the Big 8"): cow milk, eggs, wheat, soybeans, fish, crustacean shellfish, tree nuts, and peanuts. To assess the prevalence and serum levels of specific immunoglobulins E (sIgE), we analyzed the results obtained from selected laboratories located in all regions of Poland that used the multiplex ALEX® test in the period from 2019 to 2022. Results from 3715 children were obtained. The mean age of the study population was 7.0 years. The results were stratified by age: <12 months (3.63%), 1-5 years (39.54%), 6-13 years (46.32%), and 14-18 years (10.0%). The final analysis included the sIgE results obtained with 95 food extracts and 77 food allergen molecules. The highest rates of sIgE to food allergen extracts were found for peanut (29.20%), hazel (28.20%), and apple (23.60%), and those to allergenic molecules were found for the PR-10 family of molecules (Cor a 1.0401 (23.77%), Mal d 1 (22.37%), Ara h 8 (16.93%), and globulin 7/8S (Ara h 1; 15.59%)). The lowest rates of sIgE reactivity to extracts were found for strawberry (0.40%), oregano (0.30%), and thornback ray (0.16%), and those to allergenic molecules were found for Mal d 2 (0.27%) (thaumatin-like protein, TLP), Ani s 1 (0.30%) (Kunitz-type serine protease inhibitor), and Che a 1 (0.43%) (Ole e 1 family). The rates of sensitization to storage proteins of the analyzed "the Big 8" molecules decreased significantly (p < 0.05) with age. Conversely, the rates of sensitization to PR-10 family proteins increased significantly with age. The three most common allergens in Poland, regardless of whether IgE was assayed against extracts or molecules of food allergens, were peanut, hazel, and apple (in different order depending on the ranking). A detailed analysis of sensitization to the extracts and molecules of main food allergens based on the results of a multiplex ALEX® test demonstrated the sensitization profile in Polish children (including molecular sensitization, particularly the "the Big 8" food allergen molecules), which shows considerable differences in comparison with those in other countries. Serum sIgE analysis of children from all regions of Poland revealed a food allergen molecular sensitization profile that changes with age.
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Affiliation(s)
- Izabela Knyziak-Mędrzycka
- Outpatient Allergology Clinic, the Children’s Memorial Health Institute, Aleja Dzieci Polskich 20, 04-730 Warsaw, Poland;
| | - Emilia Majsiak
- Department of Health Promotion, Faculty Health of Sciences, Medical University of Lublin, Staszica 4/6, 20-081 Lublin, Poland
| | - Weronika Gromek
- Polish-Ukrainian Foundation of Medicine Development, Nałęczowska 14, 20-701 Lublin, Poland;
| | - Danuta Kozłowska
- Diagnostyka S.A., Prof. M.Życzkowskiego 16, 31-864 Kraków, Poland; (D.K.); (J.S.)
| | - Jakub Swadźba
- Diagnostyka S.A., Prof. M.Życzkowskiego 16, 31-864 Kraków, Poland; (D.K.); (J.S.)
| | - Joanna Beata Bierła
- Department of Pathomorphology, the Children’s Memorial Health Institute, Aleja Dzieci Polskich 20, 04-730 Warsaw, Poland; (J.B.B.); (B.C.)
| | - Ryszard Kurzawa
- Department of Allergology and Pneumonology of the National Research Institute for Tuberculosis and Lung Diseases, Regional Branch in Rabka-Zdrój, Profesora Rudnika 3B, 34-700 Rabka-Zdrój, Poland;
| | - Bożena Cukrowska
- Department of Pathomorphology, the Children’s Memorial Health Institute, Aleja Dzieci Polskich 20, 04-730 Warsaw, Poland; (J.B.B.); (B.C.)
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Chang LS, Kuo HC, Suen JJB, Yang PH, Hou CP, Sun HR, Lee ZM, Huang YH. Multimedia Mixed Reality Interactive Shared Decision-Making Game in Children with Moderate to Severe Atopic Dermatitis, a Pilot Study. CHILDREN 2023; 10:children10030574. [PMID: 36980133 PMCID: PMC10047264 DOI: 10.3390/children10030574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 03/07/2023] [Accepted: 03/15/2023] [Indexed: 03/19/2023]
Abstract
(1) Objective: Atopic dermatitis (AD) is a recurring skin disease that affects children’s daily activities and sleep quality. Due to the limitations of children’s understanding and ability to express themselves, shared decision making (SDM) is often made by guardians, which thus affects the acceptance and effectiveness of children’s treatments. Previous studies have demonstrated that involving both children and parents in decision making may help improve treatment outcomes; thus, we designed a multimedia mixed reality (MR) interactive game of SDM for children with moderate to severe AD. (2) Methods: Research participants included 6–18-year-old patients with moderate to severe AD. This research consisted of the following steps: designing SDM; character setting and visual design; performing games; system modification and optimization; screen editing and dubbing; and user testing and questionnaires by the System Usability Scale (SUS). (3) Results: We completed the SDM design for children with moderate to severe AD. Four different treatments were biologics, oral immune-modulating drugs, phototherapy, and wet wrap. An animated PowerPoint slide showed the AD apple rolling around before treatments and the AD apple sleeping soundly after treatments. Instructions with video teaching for the four different treatments were played, and then, the MR was turned on so that the patients could help the AD apple in the metaverse to undergo these four treatments. A total of 12 moderate to severe AD patients and six control patients used the game, all aged between six and eighteen years old, with an average SUS score of 81.0 and a standard error of 2.1 points. Adjective ratings yielded a rating between good and excellent. The game showed acceptable usability. We found no statistically significant differences in SUS scores between patients with and without moderate to severe AD or between boys and girls nor significant associations between SUS and age or severity. The analysis identified that the two items with the lowest SUS scores were “I think that I would need the support of a technical person to be able to use this product” and “I needed to learn a lot of things before I could get going with this product”. Both of these comments show the limitations of this game. (4) Conclusions: Overall, this study provides the first MR SDM game that has passed the SUS and can be used as an aid in clinical SDM.
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Affiliation(s)
- Ling-Sai Chang
- Department of Pediatrics, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
- Correspondence:
| | - Ho-Chang Kuo
- Department of Pediatrics, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
| | - Jason Jyh-Bin Suen
- Department of Digital Media Design, I-Shou University, Kaohsiung 83301, Taiwan
| | - Pei-Hsin Yang
- Department of Nursing and Pediatric Ward, Chang Gung Memorial Hospital-Kaohsiung Medical Center, Kaohsiung 83301, Taiwan
| | - Chiu-Ping Hou
- Department of Nursing and Pediatric Ward, Chang Gung Memorial Hospital-Kaohsiung Medical Center, Kaohsiung 83301, Taiwan
| | - Hui-Ru Sun
- Department of Nursing and Pediatric Ward, Chang Gung Memorial Hospital-Kaohsiung Medical Center, Kaohsiung 83301, Taiwan
| | - Zon-Min Lee
- Department of Pharmacy, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan
| | - Ying-Hsien Huang
- Department of Pediatrics, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
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Arunachalam AB, Post P, Rudin D. Unique features of a recombinant haemagglutinin influenza vaccine that influence vaccine performance. NPJ Vaccines 2021; 6:144. [PMID: 34857771 PMCID: PMC8640007 DOI: 10.1038/s41541-021-00403-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 11/03/2021] [Indexed: 12/24/2022] Open
Abstract
The influenza vaccine field has been constantly evolving to improve the speed, scalability, and flexibility of manufacturing, and to improve the breadth and longevity of the protective immune response across age groups, giving rise to an array of next generation vaccines in development. Among these, the recombinant influenza vaccine tetravalent (RIV4), using a baculovirus expression vector system to express recombinant haemagglutinin (rHA) in insect cells, is the only one to have reached the market and has been studied extensively. We describe how the unique structural features of rHA in RIV4 improve protective immune responses compared to conventional influenza vaccines made from propagated influenza virus. In addition to the sequence integrity, characteristic of recombinant proteins, unique post-translational processing of the rHA in insect cells instills favourable tertiary and quaternary structural features. The absence of protease-driven cleavage and addition of simple N-linked glycans help to preserve and expose certain conserved epitopes on HA molecules, which are likely responsible for the high levels of broadly cross-reactive and protective antibodies with rare specificities observed with RIV4. Furthermore, the presence of uniform compact HA oligomers and absence of egg proteins, viral RNA or process impurities, typically found in conventional vaccines, are expected to eliminate potential adverse reactions to these components in susceptible individuals with the use of RIV4. These distinct structural features and purity of the recombinant HA vaccine thus provide a number of benefits in vaccine performance which can be extended to other viral targets, such as for COVID-19.
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Affiliation(s)
- Arun B Arunachalam
- Analytical Sciences, R&D Sanofi Pasteur, 1 Discovery Drive, Swiftwater, PA, 18370, USA.
| | - Penny Post
- Regulatory Affairs, Protein Sciences, a Sanofi Company, 1000 Research Parkway, Meriden, CT, 06450, USA
| | - Deborah Rudin
- Global Medical Affairs, Sanofi Pasteur, 1 Discovery Drive, Swiftwater, PA, 18370, USA
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Aptamer-Based Fluorescent Biosensor for the Rapid and Sensitive Detection of Allergens in Food Matrices. Foods 2021; 10:foods10112598. [PMID: 34828878 PMCID: PMC8623274 DOI: 10.3390/foods10112598] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/20/2021] [Accepted: 10/22/2021] [Indexed: 02/07/2023] Open
Abstract
Food allergies have seriously affected the life quality of some people and even endangered their lives. At present, there is still no effective cure for food allergies. Avoiding the intake of allergenic food is still the most effective way to prevent allergic diseases. Therefore, it is necessary to develop rapid, accurate, sensitive, and reliable analysis methods to detect food allergens from different sources. Aptamers are oligonucleotide sequences that can bind to a variety of targets with high specificity and selectivity, and they are often combined with different transduction technologies, thereby constructing various types of aptamer sensors. In recent years, with the development of technology and the application of new materials, the sensitivity, portability, and cost of fluorescence sensing technology have been greatly improved. Therefore, aptamer-based fluorescence sensing technology has been widely developed and applied in the specific recognition of food allergens. In this paper, the classification of major allergens and their characteristics in animal and plant foods were comprehensively reviewed, and the preparation principles and practical applications of aptamer-based fluorescence biosensors are summarized. In addition, we hope that this article can provide some strategies for the rapid and sensitive detection of allergens in food matrices.
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Vapor A, Mendonça A, Tomaz CT. Processes for reducing egg allergenicity: Advances and different approaches. Food Chem 2021; 367:130568. [PMID: 34343811 DOI: 10.1016/j.foodchem.2021.130568] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Revised: 07/06/2021] [Accepted: 07/07/2021] [Indexed: 01/03/2023]
Abstract
Egg is a versatile ingredient and ubiquitous food. Nevertheless, egg proteins are a common cause of allergy mainly in childhood. Until now, egg eviction has been the best way to prevent this disorder, however, processed food can contribute to mitigate allergies and to guarantee life quality of allergic individuals. This review focuses on discussing and highlighting recent advances in processes to reduce egg allergenicity as well as new approaches to egg allergy management. In recent times, different methods have been developed to reduce egg allergies, by hiding the epitopes or changing the native or conformational structure of the proteins. Despite processing food has not yet been a solution to completely remove the allergenic potential of egg proteins, innovative strategies, such as addition of phenolic compounds, have been developed with promising results.
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Affiliation(s)
- Alcides Vapor
- Department of Chemistry, Faculty of Sciences, Universidade da Beira Interior, Covilhã, Portugal; CICS-UBI, Health Sciences Research Centre, Universidade da Beira Interior, Covilhã, Portugal
| | - António Mendonça
- Department of Chemistry, Faculty of Sciences, Universidade da Beira Interior, Covilhã, Portugal; CICS-UBI, Health Sciences Research Centre, Universidade da Beira Interior, Covilhã, Portugal
| | - Cândida T Tomaz
- Department of Chemistry, Faculty of Sciences, Universidade da Beira Interior, Covilhã, Portugal; CICS-UBI, Health Sciences Research Centre, Universidade da Beira Interior, Covilhã, Portugal.
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Lai CL, Campbell DE, Palmer DJ, Makrides M, Santner‐Nanan B, Gold M, Tan JW, Valerio C, Nanan R, Prescott SL, Hsu PS. Longitudinal egg-specific regulatory T- and B-cell development: Insights from primary prevention clinical trials examining the timing of egg introduction. Allergy 2021; 76:1385-1397. [PMID: 33040362 DOI: 10.1111/all.14621] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 09/02/2020] [Accepted: 09/30/2020] [Indexed: 01/13/2023]
Abstract
BACKGROUND Egg allergy affects almost 1 in 10 Australian infants. Early egg introduction has been associated with a reduced risk in developing egg allergy; however, the immune mechanisms underlying this protection remain unclear. OBJECTIVE To examine the role of regulatory immune cells in tolerance induction during early egg introduction. METHODS Cryopreserved peripheral blood mononuclear cells (PBMC) were obtained from infants from 2 randomized controlled trials of early introduction of egg for the primary prevention of egg allergy; BEAT (at 12 months, n = 42) and STEP (at 5 months n = 82; 12 months n = 82) study cohorts. In vitro ovalbumin-stimulated PBMC were analyzed by flow cytometry for presence of ovalbumin-specific regulatory T cells, using activation markers, FoxP3, and IL-10 expression. Ovalbumin-specific regulatory B cells were identified by co-expression of fluorescence-conjugated ovalbumin and IL-10. RESULTS Specific, age-dependent expansion of ovalbumin-specific regulatory T cells was only observed in infants who (a) had early egg introduction and (b) did not have egg allergy at 12 months. This expansion was blunted or impaired in children who did not undergo early egg introduction and in those with clinical egg allergy at 12 months. Infants with egg allergy at 12 months of age also had reduced frequency of ovalbumin-specific regulatory B cells compared to egg-tolerant infants. CONCLUSION Early egg introduction and clinical tolerance to egg were associated with expansion of ovalbumin-specific T and B regulatory cells, which may be an important developmental process for tolerance acquisition to food allergens.
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Affiliation(s)
- Catherine L. Lai
- Department of Allergy and Immunology The Children’s Hospital at Westmead Westmead NSW Australia
- Kids Research Institute The Children’s Hospital at Westmead Westmead NSW Australia
- Discipline of Paediatrics and Child Health The University of Sydney Sydney NSW Australia
- Murdoch Children’s Research Institute Centre for Food Allergy Research (CFAR) Parkville Vic Australia
| | - Dianne E. Campbell
- Department of Allergy and Immunology The Children’s Hospital at Westmead Westmead NSW Australia
- Kids Research Institute The Children’s Hospital at Westmead Westmead NSW Australia
- Discipline of Paediatrics and Child Health The University of Sydney Sydney NSW Australia
- Murdoch Children’s Research Institute Centre for Food Allergy Research (CFAR) Parkville Vic Australia
| | - Debra J. Palmer
- Murdoch Children’s Research Institute Centre for Food Allergy Research (CFAR) Parkville Vic Australia
- Telethon Kids Institute The University of Western Australia Nedlands WA Australia
- School of Medicine The University of Western Australia, Crawley WA Australia
| | - Maria Makrides
- South Australian Health and Medical Research Institute SAHMRI Women and Kids Adelaide SA Australia
- School of Medicine University of Adelaide Adelaide SA Australia
| | - Brigitte Santner‐Nanan
- Sydney Medical School Nepean and Charles Perkins Centre Nepean The University of Sydney Kingswood NSW Australia
| | - Michael Gold
- Discipline of Paediatrics School of Medicine University of Adelaide Adelaide SA Australia
| | - John Wei‐Liang Tan
- Department of Allergy and Immunology The Children’s Hospital at Westmead Westmead NSW Australia
| | - Carol Valerio
- Department of Allergy and Immunology The Children’s Hospital at Westmead Westmead NSW Australia
| | - Ralph Nanan
- Sydney Medical School Nepean and Charles Perkins Centre Nepean The University of Sydney Kingswood NSW Australia
| | - Susan L. Prescott
- Murdoch Children’s Research Institute Centre for Food Allergy Research (CFAR) Parkville Vic Australia
- The ORIGINS Project Telethon Kids Institute University of Western AustraliaPerth Children’s Hospital Nedlands WA Australia
- InVIVO Planetary Health of the Worldwide Universities Network (WUN) West New York NJ USA
| | - Peter S. Hsu
- Department of Allergy and Immunology The Children’s Hospital at Westmead Westmead NSW Australia
- Kids Research Institute The Children’s Hospital at Westmead Westmead NSW Australia
- Discipline of Paediatrics and Child Health The University of Sydney Sydney NSW Australia
- Murdoch Children’s Research Institute Centre for Food Allergy Research (CFAR) Parkville Vic Australia
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Are Physicochemical Properties Shaping the Allergenic Potency of Animal Allergens? Clin Rev Allergy Immunol 2021; 62:1-36. [DOI: 10.1007/s12016-020-08826-1] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/09/2020] [Indexed: 12/31/2022]
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Development of a liquid chromatography-tandem mass spectrometry method for simultaneous quantification of hen's egg white allergens Gal d 1-4 in fresh and processed eggs. Food Chem 2020; 345:128022. [PMID: 33039190 DOI: 10.1016/j.foodchem.2020.128022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 09/01/2020] [Accepted: 09/02/2020] [Indexed: 11/22/2022]
Abstract
Hen's egg white allergens, namely Gal d 1-4, cause food allergies worldwide and their intake must be strictly controlled by allergic individuals. However, an efficient method for quantifying these allergens is currently unavailable. We aimed to develop an LC-MS/MS method for simultaneous Gal d 1-4 quantification. Purified Gal d 1-4 proteins were trypsin-digested and the resulting peptides used in LC-MS/MS analysis. The limits of quantification were 9.77-39.1 ng/mL. The Gal d 1-4 recovery in fresh and processed eggs was 68.3-121.3%, and intra- and interassay coefficients of variation were 1.5-15.7% and 2.4-38.1%, respectively, indicating high sensitivity, accuracy, and reproducibility. In addition, the high specificity of this method was confirmed by testing 27 other foods. This newly developed method could provide reliable information to the industrial food and clinical fields, facilitating improved quality of life for individuals with egg allergies.
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Smoldovskaya O, Feyzkhanova G, Voloshin S, Arefieva A, Chubarova A, Pavlushkina L, Filatova T, Antonova E, Timofeeva E, Butvilovskaya V, Lysov Y, Zasedatelev A, Rubina A. Allergen-specific IgE and IgG4 patterns among patients with different allergic diseases. World Allergy Organ J 2018; 11:35. [PMID: 30524646 PMCID: PMC6276220 DOI: 10.1186/s40413-018-0220-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 10/24/2018] [Indexed: 12/15/2022] Open
Abstract
Background In addition to allergen-specific IgE (sIgE), allergen-specific IgG4 (sIgG4) antibodies are also involved in the immune response resulting from an allergen exposure. The aim of our study was to analyze sIgE and sIgG4 patterns in the most common allergic disorders: bronchial asthma, upper airway disorders and atopic dermatitis. Methods In this study a screening analysis of blood serum samples from 673 patients aged from 6 months to 17 years with different allergic entities was performed on microarrays. sIgE and sIgG4 levels to the most common allergens were estimated. Results sIgE response to most pollen allergens is more strongly associated with respiratory diseases than with atopic dermatitis, while sIgE responses to cat and dog dander are more strongly associated with bronchial asthma than with atopic dermatitis and upper airway disorders such as rhinosinusitis and allergic rhinitis. A lower prevalence of sIgG4 to pollen allergens in cases of atopic dermatitis is observed compared with that in cases of asthma and upper airway disorders. Analyzing all the allergic disorders, one can see that sIgG4 response to inhalant allergens is strongly associated with sensitization to the corresponding allergen. Conclusion Allergen-specific IgE and IgG4 patterns that are relevant to concrete allergic diseases differ by sIgE and sIgG4 prevalences to defined allergens. Electronic supplementary material The online version of this article (10.1186/s40413-018-0220-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Olga Smoldovskaya
- 1Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilova str. 32, Moscow, Russian Federation 119991
| | - Guzel Feyzkhanova
- 1Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilova str. 32, Moscow, Russian Federation 119991
| | - Sergei Voloshin
- 1Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilova str. 32, Moscow, Russian Federation 119991
| | - Alla Arefieva
- 1Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilova str. 32, Moscow, Russian Federation 119991
| | | | | | | | | | | | - Veronika Butvilovskaya
- 1Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilova str. 32, Moscow, Russian Federation 119991
| | - Yuri Lysov
- 1Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilova str. 32, Moscow, Russian Federation 119991
| | - Alexander Zasedatelev
- 1Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilova str. 32, Moscow, Russian Federation 119991
| | - Alla Rubina
- 1Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilova str. 32, Moscow, Russian Federation 119991
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Khoo LW, Audrey Kow SF, Maulidiani M, Lee MT, Tan CP, Shaari K, Tham CL, Abas F. Plasma and urine metabolite profiling reveals the protective effect of Clinacanthus nutans in an ovalbumin-induced anaphylaxis model: 1H-NMR metabolomics approach. J Pharm Biomed Anal 2018; 158:438-450. [DOI: 10.1016/j.jpba.2018.06.038] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 06/01/2018] [Accepted: 06/21/2018] [Indexed: 01/22/2023]
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Li X, Yuan S, Huang M, Gao J, Wu Z, Tong P, Yang A, Chen H. Identification of IgE and IgG epitopes on native Bos d 4 allergen specific to allergic children. Food Funct 2018; 7:2996-3005. [PMID: 27273451 DOI: 10.1039/c6fo00416d] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Alpha-lactalbumin (ALA) is one of the major allergens in cow's milk. However, research on its conformational epitopes has been relatively limited. In our study, specific antibodies against cow's milk ALA were purified from eight children by two-step affinity chromatography. Subsequently, mimotopes against IgG and IgE were biopanned from Ph.D.-12 and Ph.D.-C7C, respectively. Based on the mimotopes, linear epitopes were defined with the UniProt alignment tool. Conformational epitopes were computed using the Pepitope Server. Six IgE and seven IgG linear epitopes were identified. Meanwhile, five IgE and three IgG conformational epitopes were revealed with PyMOL. The results showed that common residues were identified in both IgE and IgG epitopes and some residues of the conformational epitopes were composed of linear epitopes on bovine α-lactalbumin. The results indicated that the data could be used for developing hypoallergenic dairy products on the basis of epitopes and providing a diagnostic tool for the assessment of patients who are allergic to cow's milk.
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Affiliation(s)
- Xin Li
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P.R.China and School of Food Science & Technology, Nanchang University, Nanchang 330047, P.R.China
| | - Shuilin Yuan
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P.R.China and School of Food Science & Technology, Nanchang University, Nanchang 330047, P.R.China
| | - Meijia Huang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P.R.China and School of Food Science & Technology, Nanchang University, Nanchang 330047, P.R.China
| | - Jinyan Gao
- School of Food Science & Technology, Nanchang University, Nanchang 330047, P.R.China
| | - Zhihua Wu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P.R.China and Jiangxi-OAI Joint Research Institute, Nanchang University, Nanchang 330047, P.R.China.
| | - Ping Tong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P.R.China and School of Food Science & Technology, Nanchang University, Nanchang 330047, P.R.China
| | - Anshu Yang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P.R.China and Jiangxi-OAI Joint Research Institute, Nanchang University, Nanchang 330047, P.R.China.
| | - Hongbing Chen
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P.R.China and Jiangxi-OAI Joint Research Institute, Nanchang University, Nanchang 330047, P.R.China.
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Park HY, Yoon TJ, Kim HH, Han YS, Choi HD. Changes in the antigenicity and allergenicity of ovalbumin in chicken egg white by N-acetylglucosaminidase. Food Chem 2017; 217:342-345. [DOI: 10.1016/j.foodchem.2016.08.112] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Revised: 07/04/2016] [Accepted: 08/27/2016] [Indexed: 10/21/2022]
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13
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Bihouée T, Bouchaud G, Chesné J, Lair D, Rolland-Debord C, Braza F, Cheminant MA, Aubert P, Mahay G, Sagan C, Neunlist M, Brouard S, Bodinier M, Magnan A. Food allergy enhances allergic asthma in mice. Respir Res 2014; 15:142. [PMID: 25433406 PMCID: PMC4255648 DOI: 10.1186/s12931-014-0142-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Accepted: 11/01/2014] [Indexed: 11/17/2022] Open
Abstract
Background Atopic march refers to the typical transition from a food allergy in early childhood to allergic asthma in older children and adults. However the precise interplay of events involving gut, skin and pulmonary inflammation in this process is not completely understood. Objectives To develop a mouse model of mixed food and respiratory allergy mimicking the atopic march and better understand the impact of food allergies on asthma. Methods Food allergy to ovalbumin (OVA) was induced through intra-peritoneal sensitization and intra-gastric challenge, and/or a respiratory allergy to house dust mite (HDM) was obtained through percutaneous sensitization and intra-nasal challenges with dermatophagoides farinae (Der f) extract. Digestive, respiratory and systemic parameters were analyzed. Results OVA-mediated gut allergy was associated with an increase in jejunum permeability, and a worsening of Der f-induced asthma with stronger airway hyperresponsiveness and pulmonary cell infiltration, notably eosinophils. There was overproduction of the pro-eosinophil chemokine RANTES in broncho-alveolar lavages associated with an enhanced Th2 cytokine secretion and increased total and Der f-specific IgE when the two allergies were present. Both AHR and lung inflammation increased after a second pulmonary challenge. Conclusion Gut sensitization to OVA amplifies Der f-induced asthma in mice.
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Affiliation(s)
- Tiphaine Bihouée
- INSERM U1087, l'institut du Thorax CHU Nantes, Hôpital Laënnec, 44093, Nantes Cedex 1, France. .,CNRS, UMR 6291, Nantes, F-44000, France. .,Université de Nantes, Nantes, F-44000, France. .,DHU2020 médecine personnalisée des maladies chroniques, Nantes, F-44000, France. .,CHU de Nantes, Service de Pédiatrie, Nantes, F-44000, France.
| | - Gregory Bouchaud
- INSERM U1087, l'institut du Thorax CHU Nantes, Hôpital Laënnec, 44093, Nantes Cedex 1, France. .,CNRS, UMR 6291, Nantes, F-44000, France. .,Université de Nantes, Nantes, F-44000, France. .,DHU2020 médecine personnalisée des maladies chroniques, Nantes, F-44000, France. .,INRA, UR1268 BIA, Nantes, F-44316, France.
| | - Julie Chesné
- INSERM U1087, l'institut du Thorax CHU Nantes, Hôpital Laënnec, 44093, Nantes Cedex 1, France. .,CNRS, UMR 6291, Nantes, F-44000, France. .,Université de Nantes, Nantes, F-44000, France. .,DHU2020 médecine personnalisée des maladies chroniques, Nantes, F-44000, France.
| | - David Lair
- INSERM U1087, l'institut du Thorax CHU Nantes, Hôpital Laënnec, 44093, Nantes Cedex 1, France. .,CNRS, UMR 6291, Nantes, F-44000, France. .,Université de Nantes, Nantes, F-44000, France. .,DHU2020 médecine personnalisée des maladies chroniques, Nantes, F-44000, France.
| | - Camille Rolland-Debord
- INSERM U1087, l'institut du Thorax CHU Nantes, Hôpital Laënnec, 44093, Nantes Cedex 1, France. .,CNRS, UMR 6291, Nantes, F-44000, France. .,Université de Nantes, Nantes, F-44000, France. .,DHU2020 médecine personnalisée des maladies chroniques, Nantes, F-44000, France.
| | - Faouzi Braza
- INSERM U1087, l'institut du Thorax CHU Nantes, Hôpital Laënnec, 44093, Nantes Cedex 1, France. .,CNRS, UMR 6291, Nantes, F-44000, France. .,Université de Nantes, Nantes, F-44000, France. .,DHU2020 médecine personnalisée des maladies chroniques, Nantes, F-44000, France.
| | - Marie-Aude Cheminant
- INSERM U1087, l'institut du Thorax CHU Nantes, Hôpital Laënnec, 44093, Nantes Cedex 1, France. .,CNRS, UMR 6291, Nantes, F-44000, France. .,Université de Nantes, Nantes, F-44000, France. .,DHU2020 médecine personnalisée des maladies chroniques, Nantes, F-44000, France.
| | - Philippe Aubert
- Université de Nantes, Nantes, F-44000, France. .,DHU2020 médecine personnalisée des maladies chroniques, Nantes, F-44000, France. .,INSERM, UMR U913, Nantes, F-44000, France.
| | - Guillaume Mahay
- INSERM U1087, l'institut du Thorax CHU Nantes, Hôpital Laënnec, 44093, Nantes Cedex 1, France. .,CNRS, UMR 6291, Nantes, F-44000, France. .,Université de Nantes, Nantes, F-44000, France. .,DHU2020 médecine personnalisée des maladies chroniques, Nantes, F-44000, France.
| | - Christine Sagan
- INSERM U1087, l'institut du Thorax CHU Nantes, Hôpital Laënnec, 44093, Nantes Cedex 1, France. .,CNRS, UMR 6291, Nantes, F-44000, France. .,CHU de Nantes, Service d'anatomie et cytologique pathologiques, Nantes, France.
| | - Michel Neunlist
- Université de Nantes, Nantes, F-44000, France. .,DHU2020 médecine personnalisée des maladies chroniques, Nantes, F-44000, France. .,INSERM, UMR U913, Nantes, F-44000, France.
| | - Sophie Brouard
- INSERM, UMR U1064 and Institut de Transplantation Urologie, Néphrologie (ITUN), Nantes, F44093, France.
| | | | - Antoine Magnan
- INSERM U1087, l'institut du Thorax CHU Nantes, Hôpital Laënnec, 44093, Nantes Cedex 1, France. .,CNRS, UMR 6291, Nantes, F-44000, France. .,Université de Nantes, Nantes, F-44000, France. .,CHU de Nantes, l'institut du thorax, Service de Pneumologie, Nantes, F-44000, France. .,DHU2020 médecine personnalisée des maladies chroniques, Nantes, F-44000, France.
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Dang TD, Mills CEN, Allen KJ. Determination of the clinical egg allergy phenotypes using component-resolved diagnostics. Pediatr Allergy Immunol 2014; 25:639-43. [PMID: 25376255 DOI: 10.1111/pai.12301] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/03/2014] [Indexed: 11/27/2022]
Abstract
IgE-mediated egg allergy presents as one of the most common food allergies in children and is a food which is widely consumed all over the world. Measurement of egg white-specific IgE levels has been shown to be a poor predictor of clinical phenotypes of egg allergy, including to raw egg white, but particularly to baked or cooked egg. Egg white and yolk contain more than 20 different glycoproteins, including ovomucoid, ovalbumin, ovotransferrin, alpha-livetin, and the newly identified Gal d 6. Recent developments in component-resolved diagnostic technology, including microarrays, have enabled us to improve the way in which we diagnose food allergy. This technology allows us to measure specific IgE antibodies to individual egg allergens which have been highly purified. Characterization of the major egg allergens could help profile the relevant binding epitopes to each region and may also help diagnose the different clinical phenotypes of egg allergy.
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Affiliation(s)
- Thanh D Dang
- Centre of Food and Allergy Research, Murdoch Childrens Research Institute, Parkville, Vic., Australia; Department of Paediatrics, University of Melbourne, Parkville, Vic., Australia
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