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Sakihara T. Regular consumption following early introduction of allergenic foods and aggressive treatment of eczema are necessary for preventing the development of food allergy in children. Curr Opin Allergy Clin Immunol 2024; 24:160-165. [PMID: 38538069 DOI: 10.1097/aci.0000000000000983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
PURPOSE OF REVIEW Over the past two decades, food allergy prevention strategies have shifted from 'delayed introduction' to 'no delayed introduction' to 'early introduction' of allergenic foods. This article reviews important research in this field published in the early 2020s to support future strategies for food allergy prevention. RECENT FINDINGS Recent randomized controlled trials (RCTs), systematic reviews, meta-analyses, and real-world studies have reported that early allergenic food introduction, especially peanut and egg, are effective for preventing food allergies. However, there are also reports that food-induced anaphylaxis admission rates in infants are increasing. SUMMARY Early allergenic food introduction by itself is not sufficient to prevent the development of food allergies. Recent RCTs (SPADE study and COMEET study) have demonstrated that continued regular cow's milk consumption after early introduction is important for preventing the onset of cow's milk allergy. Furthermore, an RCT (PACI study) reported that early and aggressive anti-inflammatory topical therapy for eczema can contribute to the prevention of egg allergy by suppressing percutaneous sensitization. Food allergies may be prevented through a combination of early food introduction, regular consumption, and active eczema treatment. Further research is needed to develop well tolerated, effective, and practical strategies to prevent food allergies.
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Wang Z, Zhang J, Yuan J, Min F, Gao J, Liu W, Huang M, Wu Y, Chen H. Oral administration of egg ovalbumin allergen induces dysregulation of tryptophan metabolism in sensitized BALB/c mice. Food Funct 2024; 15:4375-4388. [PMID: 38546528 DOI: 10.1039/d3fo05300h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/23/2024]
Abstract
Food allergy (FA), triggered by specific dietary allergens, has emerged as a substantial global concern for food safety and public health. While studies have elucidated changes in immune cells and cytokines associated with allergen exposure, a comprehensive analysis of the host's metabolic features and the interaction between metabolites and the gut microbiota has not been conducted. In this study, egg allergen ovalbumin (OVA) was administered by the oral route to sensitized BALB/c mice to faithfully replicate key aspects of human FA, including severe allergic diarrhea, mast cell infiltration, and elevated levels of serum IgE, mMCPT-1, and Th2 cell hallmark cytokines (such as IL-4, IL-5, and IL-13). Furthermore, the untargeted and targeted metabolomic analyses indicated that FA in mice precipitated a substantial decrease in the tryptophan metabolites indole-3-acrylic acid (IA) and indole-3-lactic acid (ILA). The integration of shotgun metagenome and metabolome data further unveiled that the dysregulation of indole metabolism is related to a decline in the abundance of beneficial bacteria such as Lactobacillus and Bifidobacterium. Additionally, disruption of the tryptophan indole derivative pathway compromises the maintenance of intestinal mucosal function through the AHR signaling pathway, manifested by decreased expression of Reg3g and IL22. Taken together, this study demonstrated that the anaphylaxis triggered by oral ingestion of food allergens can lead to disruptions in tryptophan metabolism, consequently impairing intestinal immune homeostasis.
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Affiliation(s)
- Zhongliang Wang
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China.
- College of Food Science and Technology, Nanchang University, Nanchang 330031, China
- Jiangxi Province Key Laboratory of Food Allergy, Nanchang University, Nanchang 330047, China.
| | - Jie Zhang
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China.
- College of Food Science and Technology, Nanchang University, Nanchang 330031, China
- Animal Science and Technology Center, Jiangxi University of Traditional Medicine, Nanchang 330004, China
| | - Jin Yuan
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China.
- College of Food Science and Technology, Nanchang University, Nanchang 330031, China
- Jiangxi Province Key Laboratory of Food Allergy, Nanchang University, Nanchang 330047, China.
| | - Fangfang Min
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China.
- College of Food Science and Technology, Nanchang University, Nanchang 330031, China
- Jiangxi Province Key Laboratory of Food Allergy, Nanchang University, Nanchang 330047, China.
| | - Jinyan Gao
- College of Food Science and Technology, Nanchang University, Nanchang 330031, China
- Jiangxi Province Key Laboratory of Food Allergy, Nanchang University, Nanchang 330047, China.
| | - Wenfeng Liu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China.
- College of Food Science and Technology, Nanchang University, Nanchang 330031, China
- Jiangxi Province Key Laboratory of Food Allergy, Nanchang University, Nanchang 330047, China.
| | - Meijia Huang
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China.
- College of Food Science and Technology, Nanchang University, Nanchang 330031, China
- Jiangxi Province Key Laboratory of Food Allergy, Nanchang University, Nanchang 330047, China.
| | - Yong Wu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China.
- Sino German Joint Research Institute, Nanchang University, Nanchang 330047, China
- Jiangxi Province Key Laboratory of Food Allergy, Nanchang University, Nanchang 330047, China.
| | - Hongbing Chen
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China.
- Sino German Joint Research Institute, Nanchang University, Nanchang 330047, China
- Jiangxi Province Key Laboratory of Food Allergy, Nanchang University, Nanchang 330047, China.
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Zhang Y, Liu JY, Shao JW, Luo QQ, Zhang YQ, Song G, Wang CY, Zhao SY, Wan C, Du XH, Xu LZ. Effective Model of Food Allergy in Mice Sensitized with Ovalbumin and Freud's Adjuvant. Bull Exp Biol Med 2021; 171:352-356. [PMID: 34297293 DOI: 10.1007/s10517-021-05226-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Indexed: 12/29/2022]
Abstract
To better explore the pathophysiology of FA and its therapy, we aimed to establish a simple and practicable FA model with Freund's adjuvant and introduce an easy and reliable laboratory evaluation method for assessment of inflammation in intestinal segments at different anatomical locations. BALB/c mice were sensitized with ovalbumin combined with Freund's adjuvant. Complete Freund's adjuvant was chosen for the first sensitization and two weeks later incomplete Freund's adjuvant was used for a second sensitization. Two weeks later, the sensitized mice were challenged with 50 mg ovalbumin every other day. After the 6 challenge, all mice were assessed for systemic anaphylaxis, and then sacrificed for sample collection. All sensitized mice showed anaphylactic symptoms and markedly increased levels of serum ovalbumin-specific IgE and IgG1. The activity of mast cell protease-1 (mMCPT-1) was significantly increased in the serum and interstitial fluid of the duodenum, jejunum, ileum, and colon. A successful FA model was established, of which inflammation occurred in the duodenum, jejunum, ileum, and colon. This model provides a reliable and simple tool for analysis of the mechanism of FA and methods of immunotherapy. Moreover, combined detection of ovalbumin-specific antibody and local mMCPT-1 levels could potentially be used as the major indicator for assessment of food allergy.
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Affiliation(s)
- Y Zhang
- Key Lab for Immunology, Universities of Shandong Province, School of Basic Medical Sciences, Weifang Medical University, Weifang, China
| | - J Y Liu
- Key Lab for Immunology, Universities of Shandong Province, School of Basic Medical Sciences, Weifang Medical University, Weifang, China
| | - J W Shao
- Key Lab for Immunology, Universities of Shandong Province, School of Basic Medical Sciences, Weifang Medical University, Weifang, China
| | - Q Q Luo
- Key Lab for Immunology, Universities of Shandong Province, School of Basic Medical Sciences, Weifang Medical University, Weifang, China
| | - Y Q Zhang
- Key Lab for Immunology, Universities of Shandong Province, School of Basic Medical Sciences, Weifang Medical University, Weifang, China
| | - G Song
- Key Lab for Immunology, Universities of Shandong Province, School of Basic Medical Sciences, Weifang Medical University, Weifang, China
| | - C Y Wang
- Key Lab for Immunology, Universities of Shandong Province, School of Basic Medical Sciences, Weifang Medical University, Weifang, China
| | - S Y Zhao
- Key Lab for Immunology, Universities of Shandong Province, School of Basic Medical Sciences, Weifang Medical University, Weifang, China
| | - C Wan
- Key Lab for Immunology, Universities of Shandong Province, School of Basic Medical Sciences, Weifang Medical University, Weifang, China
| | - X H Du
- Key Lab for Immunology, Universities of Shandong Province, School of Basic Medical Sciences, Weifang Medical University, Weifang, China
| | - L Z Xu
- Key Lab for Immunology, Universities of Shandong Province, School of Basic Medical Sciences, Weifang Medical University, Weifang, China.
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Lee J, Gantulga P, Lee C, Jeong K, Lee E, Lee S. A Preliminary Study on Cross-Reactivity of Heat-Treated Quail and Hen's Egg White Proteins in Young Children. Nutrients 2021; 13:nu13072172. [PMID: 34202741 PMCID: PMC8308246 DOI: 10.3390/nu13072172] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 06/16/2021] [Accepted: 06/22/2021] [Indexed: 11/17/2022] Open
Abstract
We investigated the effects of different types of heat treatments on hen’s egg white (HEw) and quail egg white (QEw) proteins and their cross-reactivity in young children. Crude extracts of raw and water-boiled HEw and QEw and commercially developed stone-baked HEw were prepared. Sodium dodecyl sulfate–polyacrylamide gel electrophoresis (SDS-PAGE) was then performed. Patients diagnosed with HEw allergy were enrolled, and pooled sera were tested with each extract in an enzyme-linked immunosorbent assay (ELISA)-inhibition test. A skin prick test (SPT) and oral food challenge (OFC) were also performed. The median age of 12 patients was 2.5 years. SDS-PAGE results revealed strongly stained bands for the ovomucoid of boiled HEw and QEw, while stone-baked HEw displayed remarkable changes for all protein fractions. In the ELISA-inhibition test, pre-incubation of the sera led to a profound decrease, moderate decrease, and minimal decrease in the amount of IgE binding to boiled and raw HEw, boiled and raw QEw, and stone-baked HEw proteins, respectively. SPTs and OFC demonstrated cross-reactivity values of 41.7% (5/12) and 16.7% (2/12) for boiled QEw and stone-baked HEw, respectively. We observed moderate cross-reactivity between QEw and HEw. Boiling had a limited effect on altering egg allergenicity. Commercially developed, stone-baked HEw can be an alternative food for children with HE allergy.
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Affiliation(s)
- Jeongmin Lee
- Department of Pediatrics, Yonsei University Wonju College of Medicine, Wonju 26426, Korea; (J.L.); (C.L.)
| | - Purevsan Gantulga
- Department of Pediatrics, Ajou University School of Medicine, Suwon 16499, Korea; (P.G.); (K.J.)
| | - Changhoon Lee
- Department of Pediatrics, Yonsei University Wonju College of Medicine, Wonju 26426, Korea; (J.L.); (C.L.)
| | - Kyunguk Jeong
- Department of Pediatrics, Ajou University School of Medicine, Suwon 16499, Korea; (P.G.); (K.J.)
| | - Eunjoo Lee
- Department of Pediatrics, Inje University Haeundae Paik Hospital, Busan 48108, Korea;
| | - Sooyoung Lee
- Department of Pediatrics, Ajou University School of Medicine, Suwon 16499, Korea; (P.G.); (K.J.)
- Correspondence: ; Tel.: +82-312195160; Fax: +82-312195169
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5
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Noah TK, Lee JB, Brown CA, Yamani A, Tomar S, Ganesan V, Newberry RD, Huffnagle GB, Divanovic S, Hogan SP. Thermoneutrality Alters Gastrointestinal Antigen Passage Patterning and Predisposes to Oral Antigen Sensitization in Mice. Front Immunol 2021; 12:636198. [PMID: 33841417 PMCID: PMC8034294 DOI: 10.3389/fimmu.2021.636198] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 03/05/2021] [Indexed: 01/02/2023] Open
Abstract
Food allergy is an emerging epidemic, and the underlying mechanisms are not well defined partly due to the lack of robust adjuvant free experimental models of dietary antigen sensitization. As housing mice at thermoneutrality (Tn) - the temperature of metabolic homeostasis (26-30°C) - has been shown to improve modeling various human diseases involved in inflammation, we tested the impact of Tn housing on an experimental model of food sensitization. Here we demonstrate that WT BALB/c mice housed under standard temperature (18-20°C, Ts) conditions translocated the luminal antigens in the small intestine (SI) across the epithelium via goblet cell antigen passages (GAPs). In contrast, food allergy sensitive Il4raF709 mice housed under standard temperature conditions translocated the luminal antigens in the SI across the epithelium via secretory antigen passages (SAPs). Activation of SI antigen passages and oral challenge of Il4raF709 mice with egg allergens at standard temperature predisposed Il4raF709 mice to develop an anaphylactic reaction. Housing Il4raF709 mice at Tn altered systemic type 2 cytokine, IL-4, and the landscape of SI antigen passage patterning (villus and crypt involvement). Activation of SI antigen passages and oral challenge of Il4raF709 mice with egg antigen under Tn conditions led to the robust induction of egg-specific IgE and development of food-induced mast cell activation and hypovolemic shock. Similarly, Tn housing of WT BALB/c mice altered the cellular patterning of SI antigen passage (GAPs to SAPs). Activation of SI antigen passages and the oral challenge of WT BALB/c mice with egg antigen led to systemic reactivity to egg and mast cell activation. Together these data demonstrate that Tn housing alters antigen passage cellular patterning and landscape, and concurrent oral exposure of egg antigens and SAP activation is sufficient to induce oral antigen sensitization.
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MESH Headings
- Administration, Oral
- Allergens/administration & dosage
- Allergens/immunology
- Allergens/metabolism
- Anaphylaxis/immunology
- Anaphylaxis/metabolism
- Anaphylaxis/microbiology
- Animals
- Disease Models, Animal
- Egg Hypersensitivity/immunology
- Egg Hypersensitivity/metabolism
- Egg Hypersensitivity/microbiology
- Egg Proteins/administration & dosage
- Egg Proteins/immunology
- Egg Proteins/metabolism
- Gastrointestinal Microbiome
- Goblet Cells/immunology
- Goblet Cells/metabolism
- Goblet Cells/microbiology
- Housing, Animal
- Intestine, Small/immunology
- Intestine, Small/metabolism
- Intestine, Small/microbiology
- Mast Cells/immunology
- Mast Cells/metabolism
- Mice, Inbred BALB C
- Mice, Knockout
- Permeability
- Receptors, Cell Surface/genetics
- Receptors, Cell Surface/metabolism
- Temperature
- Mice
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Affiliation(s)
- Taeko K. Noah
- Department of Pathology, University of Michigan, Ann Arbor, MI, United States
- Mary H Weiser Food Allergy Center, University of Michigan, Ann Arbor, MI, United States
| | - Jee-Boong Lee
- Division of Allergy and Immunology, Cincinnati Children’s Medical Center, Cincinnati, OH, United States
| | - Christopher A. Brown
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, United States
| | - Amnah Yamani
- Department of Pathology, University of Michigan, Ann Arbor, MI, United States
- Mary H Weiser Food Allergy Center, University of Michigan, Ann Arbor, MI, United States
| | - Sunil Tomar
- Department of Pathology, University of Michigan, Ann Arbor, MI, United States
- Mary H Weiser Food Allergy Center, University of Michigan, Ann Arbor, MI, United States
| | - Varsha Ganesan
- Department of Pathology, University of Michigan, Ann Arbor, MI, United States
- Mary H Weiser Food Allergy Center, University of Michigan, Ann Arbor, MI, United States
| | - Rodney D. Newberry
- Department of Medicine, Division of Gastroenterology, Washington University School of Medicine, St. Louis, MO, United States
| | - Gary B. Huffnagle
- Mary H Weiser Food Allergy Center, University of Michigan, Ann Arbor, MI, United States
- Department of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, MI, United States
| | - Senad Divanovic
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States
- Division of Immunobiology, Cincinnati Children’s Medical Center, Cincinnati, OH, United States
- Center for Inflammation and Tolerance, Cincinnati Children’s Medical Center, Cincinnati, OH, United States
| | - Simon P. Hogan
- Department of Pathology, University of Michigan, Ann Arbor, MI, United States
- Mary H Weiser Food Allergy Center, University of Michigan, Ann Arbor, MI, United States
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6
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Wai CYY, Leung NYH, Chu KH, Leung PSC. T-Cell Epitope Immunotherapy in Mouse Models of Food Allergy. Methods Mol Biol 2021; 2223:337-355. [PMID: 33226603 DOI: 10.1007/978-1-0716-1001-5_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2024]
Abstract
Food allergy has been rising in prevalence over the last two decades, affecting more than 10% of the world population. Current management of IgE-mediated food allergy relies on avoidance and rescue medications; research into treatments that are safer and providing guaranteed and durable curative effects is, therefore, essential. T-cell epitope-based immunotherapy holds the potential for modulating food allergic responses without IgE cross-linking. In this chapter, we describe the methods in evaluating the therapeutic capacities of immunodominant T-cell epitopes in animal models of food allergy. Moreover, we explain in detail the methods to measure the allergen-specific antibody levels, prepare single-cell suspension from spleen, and prepare small intestine for immunohistochemical analysis of eosinophils and Foxp3+ cells.
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Affiliation(s)
- Christine Y Y Wai
- Department of Paediatrics, School of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
- Hong Kong Hub of Paediatric Excellence, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Nicki Y H Leung
- Department of Paediatrics, School of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Ka Hou Chu
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Patrick S C Leung
- Division of Rheumatology/Allergy, School of Medicine, University of California, Davis, Davis, CA, USA.
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Abstract
Hypersensitivity or an allergy to chicken egg proteins is a predominant symptomatic condition affecting 1 in 20 children in Australia; however, an effective form of therapy has not yet been found. This occurs as the immune system of the allergic individual overreacts when in contact with egg allergens (egg proteins), triggering a complex immune response. The subsequent instantaneous inflammatory immune response is characterized by the excessive production of immunoglobulin E (IgE) antibody against the allergen, T-cell mediators and inflammation. Current allergen-specific approaches to egg allergy diagnosis and treatment lack consistency and therefore pose safety concerns among anaphylactic patients. Immunotherapy has thus far been found to be the most efficient way to treat and relieve symptoms, this includes oral immunotherapy (OIT) and sublingual immunotherapy (SLIT). A major limitation in immunotherapy, however, is the difficulty in preparing effective and safe extracts from natural allergen sources. Advances in molecular techniques allow for the production of safe and standardized recombinant and hypoallergenic egg variants by targeting the IgE-binding epitopes responsible for clinical allergic symptoms. Site-directed mutagenesis can be performed to create such safe hypoallergens for their potential use in future methods of immunotherapy, providing a feasible standardized therapeutic approach to target egg allergies safely.
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Affiliation(s)
| | - Cenk Suphioglu
- NeuroAllergy Research Laboratory (NARL), School of Life and Environmental Sciences, Faculty of Science, Engineering and Built Environment, Deakin University, 75 Pigdons Road, Geelong 3216 VIC, Australia;
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Abstract
Food allergen and aeroallergen sensitization are common allergic diseases worldwide, with widely varying estimates of prevalence in children. Our study investigated the characteristics of ingestion and inhalation allergy among children from Sichuan province in Southwest China, so as to get public awareness of these disorders.A total of 1722 children between 0 and 14 years' old were enrolled in this study. They were outpatients in the West China Second University Hospital during June 2019 to September 2019. Serum specific IgE specific to 10 types of food allergen and 10 types of aeroallergen were estimated. Nutrition indicators were tested by electrochemical luminescence.59.70% children were allergic to at least 1 allergen, comprising 24.90% to aeroallergen and 38.81% to food allergen, respectively, whereas 36.28% children were allergic to both aeroallergen and food allergen. Milk was the most common food allergen, and egg came in second place. With regard to aeroallergen, house dust mite held the maximum proportion (65.02%), whereas dust mite followed behind. Inhalation allergy was more commonly seen in boys than girls. Bronchitis was the most common symptom of both allergies. In addition, the highest incidence age for children to be sensitive to food allergen and aeroallergen were 0∼2 years' old and 3∼5 years' old, respectively. It is worth mentioning that there was no significant difference in nutritional status between children with or without allergic diseases.Our findings reveal that milk, egg, house dust mite, and dust mite are the most common allergens among children in Sichuan province. Boys are more susceptible to aeroallergen than girls. Furthermore, the prevalence of ingestion and inhalation allergy varies from different age groups, and has no correlation with nutritional status. In brief, the analysis of the pattern of food allergen and aeroallergen sensitization is invaluable to effective diagnosis and treatment of allergic diseases.
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Affiliation(s)
- Ting Liu
- Department of Laboratory Medicine, West China Second University Hospital, and Key Laboratory of Obstetric & Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education
- State Key Laboratory of Biotherapy and Cancer Center/National Collaborative Innovation Center for Biotherapy, Sichuan University, Chengdu, China
| | - Shu-yu Lai
- Department of Laboratory Medicine, West China Second University Hospital, and Key Laboratory of Obstetric & Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education
| | - Wen-sheng Li
- Department of Laboratory Medicine, West China Second University Hospital, and Key Laboratory of Obstetric & Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education
| | - Yong-mei Jiang
- Department of Laboratory Medicine, West China Second University Hospital, and Key Laboratory of Obstetric & Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education
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9
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Yang Y, Liu G, Tu Z, Wang H, Hu Y, Mao J, Zhang J. Insight into the Mechanism of Reduced IgG/IgE Binding Capacity in Ovalbumin as Induced by Glycation with Monose Epimers through Liquid Chromatography and High-Resolution Mass Spectrometry. J Agric Food Chem 2020; 68:6065-6075. [PMID: 32396375 DOI: 10.1021/acs.jafc.0c01233] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Ovalbumin (OVA) is one of the major food allergens in hen eggs. In this work, it was demonstrated that glycation with d-glucose and its epimers, including d-mannose, d-allose, d-galactose, and l-idose, could effectively attenuate the IgG/IgE binding of OVA, which was attributed to the covalent masking by sugars and to its structural changes. The glycation sites were determined, and their average degree of substitution was found using liquid chromatography coupled with high-resolution mass spectrometry. Fluctuations in OVA conformation were monitored by conventional spectrometry. Compared to those of OVA-Man and OVA-Glu, OVA-All, OVA-Gal, and OVA-Ido showed a higher glycation extent, and the alterations on their steric layouts were more drastic, suggesting that the configuration of hydroxyl groups at positions C-3, C-4, and C-5 in sugars might be important for the glycation reactivity; as such, their capabilities in binding with IgG/IgE decreased more significantly. Attempts were made to provide valuable information for in-depth understanding of the differences in biochemical functionality among epimeric sugars. These insights would be helpful for designing sweetened food products with a desirable level of safety.
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Affiliation(s)
- Yipeng Yang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, China
| | - Guangxian Liu
- Jiangxi Academy of Agricultural Sciences, Nanchang, Jiangxi 330200, China
| | - Zongcai Tu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, China
- Engineering Research Center of Freshwater Fish High-Value Utilization of Jiangxi Province, College of Life Sciences, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Hui Wang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, China
| | - Yueming Hu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, China
| | - Jihua Mao
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, China
| | - Jingjing Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, China
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10
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Abstract
Aberrant T helper-2 (Th2) responses play a critical role in the pathogenesis of allergic diseases. The underlying mechanism is to be further investigated. It is reported that soluble CD83 (sCD83) has immune-regulatory effects. This study aims to investigate the role of sCD83 in the regulation of Th2 polarization. Blood samples were collected from pediatric patients with food allergy (FA). The Th2 response was analyzed by pertinent immunological approaches. An FA murine model was developed to test the role of sCD83 in the regulation of FA response. We found that the serum sCD83 levels were lower in FA patients. A negative correlation was detected between serum sCD83 levels and serum Th2 cytokine levels. The presence of sCD83 suppressed Th2 cell differentiation and antigen-specific Th2 cell activation. sCD83 upregulated the T-bet expression and suppressed the GATA3 expression in CD4+ T cells. Administration of sCD83 suppressed experimental FA. Pediatric FA patients have low serum sCD83 levels. Administration of sCD83 can alleviate experimental FA via suppression of aberrant Th2 polarization.
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Affiliation(s)
- Wenyue Song
- Departments of Pediatrics, Obstetrics and Gynecology, Jiaozuo Women and Children Hospital, 158 Minzhu Zhong Road, Jiaozuo, 454150, China
| | - Hongfen Li
- Departments of Pediatrics, Obstetrics and Gynecology, Jiaozuo Women and Children Hospital, 158 Minzhu Zhong Road, Jiaozuo, 454150, China
| | - Bingkun Jia
- Departments of Pediatrics, Obstetrics and Gynecology, Jiaozuo Women and Children Hospital, 158 Minzhu Zhong Road, Jiaozuo, 454150, China
| | - Zhenxi Wang
- Departments of Pediatrics, Obstetrics and Gynecology, Jiaozuo Women and Children Hospital, 158 Minzhu Zhong Road, Jiaozuo, 454150, China
| | - Qingsheng Liu
- Departments of Pediatrics, Obstetrics and Gynecology, Jiaozuo Women and Children Hospital, 158 Minzhu Zhong Road, Jiaozuo, 454150, China
| | - Guangping Yang
- Departments of Pediatrics, Obstetrics and Gynecology, Jiaozuo Women and Children Hospital, 158 Minzhu Zhong Road, Jiaozuo, 454150, China
| | - Xiaorong Li
- Departments of Pediatrics, Obstetrics and Gynecology, Jiaozuo Women and Children Hospital, 158 Minzhu Zhong Road, Jiaozuo, 454150, China.
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11
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Pérez-Quintero O, Martinez-Azcona O, Balboa V, Vila L. Daily baked egg intake may accelerate the development of tolerance to raw egg in egg-allergic children. Eur J Pediatr 2020; 179:679-682. [PMID: 31758309 DOI: 10.1007/s00431-019-03488-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 08/12/2019] [Accepted: 09/26/2019] [Indexed: 11/26/2022]
Abstract
Recent studies suggest that egg-allergic children who tolerate baked egg (BE) are more likely to outgrow egg allergy than children that do not tolerate it. The question to be answered is whether regular ingestion of BE accelerates tolerance to other forms of egg (cooked and raw). Our aim was to determine if daily ingestion of BE would accelerate tolerance to raw egg in BE-tolerant patients compared to patients who tolerate BE at diagnosis but eliminated it from their diet and to patients who didn't tolerate it. We performed a retrospective analysis of all children diagnosed of IgE-mediated egg allergy at the Pediatric Allergy Unit of the Complejo Hospitalario Universitario A Coruña, from 2008 to 2014. Seventy children were included. At diagnosis, 33 patients tolerated BE and kept its daily ingestion, 16 patients tolerated BE and were recommended to avoid it, and 21 patients didn't tolerate it. Patients tolerating BE who kept daily ingestion achieved tolerance to raw egg significantly earlier (p < 0.05) than the other two groups.Conclusion: Our data suggest that daily intake of BE in BE-tolerant children accelerates tolerance to raw egg.What is Known:• It has been suggested that egg-allergic children who consume baked egg (BE) products on a regular bases are more likely to outgrow egg allergy than children that do not tolerate themWhat is New:• Patients who tolerated BE on diagnosis and followed an exclusion diet show a similar evolution than patients who initially did not tolerate BE. Daily ingestion of BE seems to accelerates tolerance to raw egg.
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Affiliation(s)
- Olinda Pérez-Quintero
- Pediatric Allergy Unit, Department of Pediatrics, Complejo Hospitalario Universitario A Coruña, Xubias s/n, 15005, A Coruña, Spain
| | - Oihana Martinez-Azcona
- Pediatric Allergy Unit, Department of Pediatrics, Complejo Hospitalario Universitario A Coruña, Xubias s/n, 15005, A Coruña, Spain
| | - Vanesa Balboa
- Epidemiology Department, Complejo Hospitalario Universitario A Coruña, Xubias s/n, 15005, A Coruña, Spain
| | - Leticia Vila
- Pediatric Allergy Unit, Department of Pediatrics, Complejo Hospitalario Universitario A Coruña, Xubias s/n, 15005, A Coruña, Spain.
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12
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Zhang J, Shen Y, Li J, Li H, Si P. Component-Resolved Diagnostic Study of Egg Allergy in Northern Chinese Children. Biomed Res Int 2020; 2020:3831087. [PMID: 32258118 PMCID: PMC7086423 DOI: 10.1155/2020/3831087] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 02/24/2020] [Indexed: 11/17/2022]
Abstract
BACKGROUND Egg component-specific IgE can be useful to evaluate and diagnose egg allergy, but their prevalence and clinical significance remain unclear in the local population. Previous studies have led to contradictory results regarding the value of specific IgG and specific IgG4 in sensitization. OBJECTIVE We aimed to determine the level of specific IgE, IgG, and IgG4 antibodies to the major egg allergens in egg-allergic children. METHODS Children from 6 months to 10 years of age were recruited. Egg allergy was confirmed by either a strong clinical history or an increased egg white-sIgE level. Other allergies were diagnosed by reactivity to other allergens but without egg-related symptoms and history. The serum sIgE, sIgG, and sIgG4 levels to major egg allergenic components (Gal d 1, Gal d 2, Gal d 3, Gal d 4, and Gal d 5), sIgE level to egg white, and tIgE level were determined by light-initiated chemiluminescent assay (LICA), ELISA, or ImmunoCAP. RESULTS Egg-allergic children had significantly higher levels of sIgE, sIgG, and sIgG4 to egg components than nonallergic children. Gal d 2 was the predominant allergen, and Gal d 2 sIgE level correlated with the egg white-sIgE level. Ratios of sIgE/sIgG4 to egg components were highest before 1 year of age and dropped gradually in the first decade of life. CONCLUSION Patterns of sIgE to egg components could distinguish different forms of egg allergy. Ratios of sIgE/sIgG4 could be useful in predicting tolerance in egg-sensitive subjects, but this needs further evaluation and investigation using more accurate models.
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Affiliation(s)
- Jiayi Zhang
- Department of Medical Laboratory, Tianjin Children's Hospital, Tianjin, China
| | - Yongming Shen
- Department of Medical Laboratory, Tianjin Children's Hospital, Tianjin, China
| | - Junpu Li
- Department of Clinical Laboratory, Tianjin Chest Hospital, Tianjin, China
| | - Huiqiang Li
- School of Medical Laboratory, Tianjin Medical University, Tianjin, China
| | - Ping Si
- Department of Medical Laboratory, Tianjin Children's Hospital, Tianjin, China
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Card C, Wilson DS, Hirosue S, Rincon-Restrepo M, de Titta A, Güç E, Martin C, Bain O, Swartz MA, Kilarski WW. Adjuvant-free immunization with infective filarial larvae as lymphatic homing antigen carriers. Sci Rep 2020; 10:1055. [PMID: 31974398 PMCID: PMC6978462 DOI: 10.1038/s41598-020-57995-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 01/09/2020] [Indexed: 11/25/2022] Open
Abstract
Controlled infection with intestinal nematodes has therapeutic potential for preventing the symptoms of allergic and autoimmune diseases. Here, we engineered larvae of the filarial nematode Litomosoides sigmodontis as a vaccine strategy to induce adaptive immunity against a foreign, crosslinked protein, chicken egg ovalbumin (OVA), in the absence of an external adjuvant. The acylation of filarial proteins with fluorescent probes or biotin was not immediately detrimental to larval movement and survival, which died 3 to 5 days later. At least some of the labeled and skin-inoculated filariae migrated through lymphatic vessels to draining lymph nodes. The immunization potential of OVA-biotin-filariae was compared to that of an OVA-bound nanoparticulate carrier co-delivered with a CpG adjuvant in a typical vaccination scheme. Production of IFNγ and TNFα by restimulated CD4+ cells but not CD8+ confirmed the specific ability of filariae to stimulate CD4+ T cells. This alternative method of immunization exploits the intrinsic adjuvancy of the attenuated nematode carrier and has the potential to shift the vaccination immune response towards cellular immunity.
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Affiliation(s)
- Catherine Card
- Institute of Bioengineering and Swiss Institute for Experimental Cancer Research (ISREC), École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - David S Wilson
- Institute for Molecular Engineering, University of Chicago, Chicago, IL, USA
| | - Sachiko Hirosue
- Institute of Bioengineering and Swiss Institute for Experimental Cancer Research (ISREC), École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Marcela Rincon-Restrepo
- Institute of Bioengineering and Swiss Institute for Experimental Cancer Research (ISREC), École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Alexandre de Titta
- Institute of Bioengineering and Swiss Institute for Experimental Cancer Research (ISREC), École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Esra Güç
- Institute of Bioengineering and Swiss Institute for Experimental Cancer Research (ISREC), École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Coralie Martin
- UMR7245, MCAM, Museum National d'Histoire Naturelle, Paris, France
| | - Odile Bain
- UMR7245, MCAM, Museum National d'Histoire Naturelle, Paris, France
| | - Melody A Swartz
- Institute of Bioengineering and Swiss Institute for Experimental Cancer Research (ISREC), École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
- Institute for Molecular Engineering, University of Chicago, Chicago, IL, USA
| | - Witold W Kilarski
- Institute of Bioengineering and Swiss Institute for Experimental Cancer Research (ISREC), École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
- Institute for Molecular Engineering, University of Chicago, Chicago, IL, USA.
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14
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Fukushima T, Yokooji T, Hirano T, Kataoka Y, Taogoshi T, Matsuo H. Aspirin enhances sensitization to the egg-white allergen ovalbumin in rats. PLoS One 2019; 14:e0226165. [PMID: 31805177 PMCID: PMC6894855 DOI: 10.1371/journal.pone.0226165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 11/20/2019] [Indexed: 12/04/2022] Open
Abstract
Enhancement of oral absorption of food allergens by non-steroidal anti-inflammatory drugs (NSAIDs), especially aspirin, is considered an exacerbating factor in the development of food allergies. In this study, we examined the effect of aspirin on oral sensitization to and absorption of the egg-white allergen ovalbumin (OVA) in rats. The absorption of OVA was evaluated by measuring the plasma concentration of OVA after oral administration by gavage. To evaluate oral sensitization to OVA, plasma levels of immunoglobulin (Ig) E and IgG1 antibodies (Abs) specific to OVA were determined by enzyme-linked immunosorbent assay after initiation of sensitization. High-dose aspirin (30 mg/kg) increased oral OVA absorption and plasma levels of OVA-specific IgE and IgG1 Abs compared with those observed in vehicle-treated rats. In contrast, low-dose aspirin (3 mg/kg) exerted no changes in either absorption or sensitization. Spermine, an absorption enhancer, increased the oral absorption of OVA to nearly the same extent as high-dose aspirin, whereas the plasma levels of OVA-specific IgE and IgG1 Abs exhibited no significant differences between spermine- and vehicle-treated rats. Among the NSAIDs, diclofenac and indomethacin increased sensitization to OVA, similar to high-dose aspirin, but meloxicam exerted no effects on Ab levels. In conclusion, we showed that high-dose aspirin enhanced oral sensitization to OVA. Our study suggests that enhanced oral sensitization to OVA cannot be ascribed to increased absorption of OVA from the intestinal tract. Although the mechanisms underlying this enhancement of sensitization are still controversial, our study suggests that modification of cytokine production due to impairment of the intestinal barrier function and inhibition of cyclooxygenase-1 activity by aspirin may be involved.
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Affiliation(s)
- Takahiro Fukushima
- Department of Pharmaceutical Services, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Tomoharu Yokooji
- Department of Pharmaceutical Services, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
- Department of Frontier Science for Pharmacotherapy, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
- * E-mail:
| | - Taiki Hirano
- Department of Pharmaceutical Services, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Yuta Kataoka
- Department of Pharmaceutical Services, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Takanori Taogoshi
- Department of Pharmaceutical Services, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Hiroaki Matsuo
- Department of Pharmaceutical Services, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
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15
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Perkin MR, Logan K, Bahnson HT, Marrs T, Radulovic S, Craven J, Flohr C, Mills EN, Versteeg SA, van Ree R, Lack G. Efficacy of the Enquiring About Tolerance (EAT) study among infants at high risk of developing food allergy. J Allergy Clin Immunol 2019; 144:1606-1614.e2. [PMID: 31812184 PMCID: PMC6902243 DOI: 10.1016/j.jaci.2019.06.045] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 06/06/2019] [Accepted: 06/14/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND The Enquiring About Tolerance (EAT) study was a randomized trial of the early introduction of allergenic solids into the infant diet from 3 months of age. The intervention effect did not reach statistical significance in the intention-to-treat analysis of the primary outcome. OBJECTIVE We sought to determine whether infants at high risk of developing a food allergy benefited from early introduction. METHODS A secondary intention-to-treat analysis was performed of 3 groups: nonwhite infants; infants with visible eczema at enrollment, with severity determined by SCORAD; and infants with enrollment food sensitization (specific IgE ≥0.1 kU/L). RESULTS Among infants with sensitization to 1 or more foods at enrollment (≥0.1 kU/L), early introduction group (EIG) infants developed significantly less food allergy to 1 or more foods than standard introduction group (SIG) infants (SIG, 34.2%; EIG, 19.2%; P = .03), and among infants with sensitization to egg at enrollment, EIG infants developed less egg allergy (SIG, 48.6%; EIG, 20.0%; P = .01). Similarly, among infants with moderate SCORAD (15-<40) at enrollment, EIG infants developed significantly less food allergy to 1 or more foods (SIG, 46.7%; EIG, 22.6%; P = .048) and less egg allergy (SIG, 43.3%; EIG, 16.1%; P = .02). CONCLUSION Early introduction was effective in preventing the development of food allergy in specific groups of infants at high risk of developing food allergy: those sensitized to egg or to any food at enrollment and those with eczema of increasing severity at enrollment. This efficacy occurred despite low adherence to the early introduction regimen. This has significant implications for the new national infant feeding recommendations that are emerging around the world.
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Affiliation(s)
- Michael R Perkin
- Population Health Research Institute, St George's, University of London, London, United Kingdom
| | - Kirsty Logan
- Paediatric Allergy Research Group, Department of Women and Children's Health, School of Life Course Sciences, King's College London, London, United Kingdom
| | | | - Tom Marrs
- Paediatric Allergy Research Group, Department of Women and Children's Health, School of Life Course Sciences, King's College London, London, United Kingdom
| | - Suzana Radulovic
- Paediatric Allergy Research Group, Department of Women and Children's Health, School of Life Course Sciences, King's College London, London, United Kingdom
| | - Joanna Craven
- Paediatric Allergy Research Group, Department of Women and Children's Health, School of Life Course Sciences, King's College London, London, United Kingdom
| | - Carsten Flohr
- Unit for Population-Based Dermatology Research, St John's Institute of Dermatology, School of Basic and Medical Biosciences, Faculty of Life Sciences & Medicine, King's College, London, United Kingdom
| | - E N Mills
- School of Biological Sciences, Division of Infection, Immunity and Respiratory Medicine, Manchester Academic Health Science Centre, Manchester Institute of Biotechnology, University of Manchester, Manchester, United Kingdom
| | - Serge A Versteeg
- Department of Experimental Immunology, Academic Medical Center, Amsterdam, The Netherlands
| | - Ronald van Ree
- Department of Experimental Immunology, Academic Medical Center, Amsterdam, The Netherlands; Department of Otorhinolaryngology, Academic Medical Center, Amsterdam, The Netherlands
| | - Gideon Lack
- Paediatric Allergy Research Group, Department of Women and Children's Health, School of Life Course Sciences, King's College London, London, United Kingdom.
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16
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Yun C, Chang M, Hou G, Lan T, Yuan H, Su Z, Zhu D, Liang W, Li Q, Zhu H, Zhang J, Lu Y, Deng J, Guo H. Mangiferin suppresses allergic asthma symptoms by decreased Th9 and Th17 responses and increased Treg response. Mol Immunol 2019; 114:233-242. [PMID: 31386980 DOI: 10.1016/j.molimm.2019.07.025] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 07/11/2019] [Accepted: 07/25/2019] [Indexed: 01/21/2023]
Abstract
Mangiferin is the major bioactive ingredient in the leaves of Mangifera indica L., Aqueous extract of such leaves have been traditionally used as an indigenous remedy for respiratory diseases including cough and asthma in Traditional Chinese Medicine. Mangiferin was shown to exert its anti-asthmatic effect by modulating Th1/Th2 cytokines imbalance via STAT6 signaling pathway. However, compelling evidence indicated that subtypes of T helpers and regulatory T cells other than Th1/Th2 were also involved in the pathogenesis of asthma. In current study, we investigated the effects of mangiferin on the differentiation and function of Th9, Th17 and Treg cells in a chicken egg ovalbumin (OVA)-induced asthmatic mouse model. Mangiferin significantly attenuated the symptoms of asthma attacks, reduced the total number of leukocytes, EOS and goblet cells infiltration in lung. Simultaneously, treatment with mangiferin remarkably decreased the proportion of Th9 and Th17 cells; reduced the levels of IL-9, IL-17A; inhibited the expression of PU.1 and RORγt in lung. However, the proportion of Treg cells, the expression of IL-10, TGF-β1 and Foxp3 were increased by mangiferin. Our data suggest that mangiferin exerted anti-asthmatic effect through decreasing Th9 and Th17 responses and increasing Treg response in OVA-induced asthmatic mouse model.
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Affiliation(s)
- Chenxia Yun
- School of Preclinical Medicine, Guangxi University of Chinese Medicine, 13 Wuhe Road, Nanning, 30200, China; School of Preclinical Medicine, Guangxi Medical University, 22 Shuangyong Road, Nanning 530021, China
| | - Ming Chang
- School of Preclinical Medicine, Guangxi Medical University, 22 Shuangyong Road, Nanning 530021, China; Key Laboratory of Longevity and Aging-related Diseases of Chinese Ministry of Education & Center for Translational Medicine, Guangxi Medical University, Nanning, Guangxi 530021, China
| | - Guanghan Hou
- The Fourth Hospital of Changsha, 70 Lushan Road, Changsha 410006, China
| | - Taijin Lan
- School of Preclinical Medicine, Guangxi University of Chinese Medicine, 13 Wuhe Road, Nanning, 30200, China
| | - Hebao Yuan
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, 1600 Huron Parkway, Ann Arbor, MI 48109, USA
| | - Zhiheng Su
- College of Pharmacy, Guangxi Medical University, 22 Shuangyong Road, Nanning 530021, China
| | - Dan Zhu
- College of Pharmacy, Guangxi Medical University, 22 Shuangyong Road, Nanning 530021, China
| | - Weiping Liang
- School of Preclinical Medicine, Guangxi Medical University, 22 Shuangyong Road, Nanning 530021, China; Key Laboratory of Longevity and Aging-related Diseases of Chinese Ministry of Education & Center for Translational Medicine, Guangxi Medical University, Nanning, Guangxi 530021, China
| | - Qiaofeng Li
- School of Preclinical Medicine, Guangxi Medical University, 22 Shuangyong Road, Nanning 530021, China; Key Laboratory of Longevity and Aging-related Diseases of Chinese Ministry of Education & Center for Translational Medicine, Guangxi Medical University, Nanning, Guangxi 530021, China
| | - Hongyan Zhu
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong 226001, China
| | - Jian Zhang
- Key Laboratory of Longevity and Aging-related Diseases of Chinese Ministry of Education & Center for Translational Medicine, Guangxi Medical University, Nanning, Guangxi 530021, China
| | - Yi Lu
- Key Laboratory of Longevity and Aging-related Diseases of Chinese Ministry of Education & Center for Translational Medicine, Guangxi Medical University, Nanning, Guangxi 530021, China.
| | - Jiagang Deng
- Guangxi Key Laboratory of Pharmacodynamic Studies of Traditional Chinese Medicine, Guangxi University of Chinese Medicine, 13 Wuhe Road, Nanning 530200, China.
| | - Hongwei Guo
- Key Laboratory of Longevity and Aging-related Diseases of Chinese Ministry of Education & Center for Translational Medicine, Guangxi Medical University, Nanning, Guangxi 530021, China; College of Pharmacy, Guangxi Medical University, 22 Shuangyong Road, Nanning 530021, China.
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17
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Rupa P, Mine Y. Comparison of Glycated Ovalbumin-Monosaccharides in the Attenuation of Ovalbumin-Induced Allergic Response in a BALB/C Mouse Model. J Agric Food Chem 2019; 67:8138-8148. [PMID: 31294563 DOI: 10.1021/acs.jafc.9b02132] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The aim of the present study was to compare various glycated ovalbumin (OVA)-monosaccharides, including OVA-mannose (Man), -glucose, -ribose, and -fructose, in the attenuation of OVA-induced allergic response in a BALB/C mouse model and the potential mechanisms of immunological modulation. The glycated OVA forms were prepared by Maillard reactions. OVA-Man significantly reduced the frequency of allergic signs. Mouse mast cell protease enzyme concentration was significantly reduced in the OVA-Man group (549.80 ± 84.67 ng/mL, p < 0.05). The OVA-Man group also had a lower histamine concentration (30.96 ± 1.12 ng/mL) as compared with the positive control OVA group (44.43 ± 0.71 ng/mL, p < 0.05). Both specific IgG and IgE were significantly reduced in the OVA-Man-treated group (p < 0.05). The OVA-Man group exhibited decreased concentrations of IL-4 (67.98 ± 3.11 pg/mL) and IL-17 (67.98 ± 3.11 pg/mL) and an increased concentration of IL-12 (336.70 ± 18.69 pg/mL, p < 0.05) compared with the positive control. Mannosylation played a vital role in allergen recognition, implicating deleterious downstream Th2 cell activation, cytokine secretion, and IgE production. This result indicates that different glycans target specific DC receptors, and differential DC processing, antigen presentation, and T cell response leads to altered variation in allergic response. OVA-Man exhibited minimal DC internalization, DC processing, MHC antigen presentation, and antigen-specific T cell activation, resulting in an attenuated allergic response and validating its efficacy as a potential immunotherapeutic candidate to treat egg allergy.
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Affiliation(s)
- Prithy Rupa
- Department of Food Science , University of Guelph , 50 Stone Road East , Guelph , Ontario N1G 2W1 , Canada
| | - Yoshinori Mine
- Department of Food Science , University of Guelph , 50 Stone Road East , Guelph , Ontario N1G 2W1 , Canada
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Caffarelli C, Di Mauro D, Mastrorilli C, Bottau P, Cipriani F, Ricci G. Solid Food Introduction and the Development of Food Allergies. Nutrients 2018; 10:E1790. [PMID: 30453619 PMCID: PMC6266759 DOI: 10.3390/nu10111790] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 11/08/2018] [Accepted: 11/13/2018] [Indexed: 02/07/2023] Open
Abstract
The rise of food allergy in childhood, particularly among developed countries, has a significant weight on public health and involves serious implications for patients' quality of life. Even if the mechanisms of food tolerance and the complex interactions between the immune system and environmental factors are still mainly unknown, pediatricians have worldwide implemented preventive measures against allergic diseases. In the last few decades, the prevention of food allergy has tracked various strategies of complementary feeding with a modification of international guidelines from delayed introduction to early weaning. Current evidence shows that complementary foods, including allergenic ones, should be introduced into diet after four months, or even better, following World Health Organization advice, around six months irrespective of risk for allergy of the individual. The introduction of peanut is recommended before 12 months of age among infants affected by severe eczema and/or egg allergy to diminish the occurrence of peanut allergy in countries with high peanut consumption. The introduction of heated egg at 6⁻8 months of age may reduce egg allergy. Infants at high risk of allergy similarly to healthy children should introduce complementary foods taking into account family and cultural preferences.
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Affiliation(s)
- Carlo Caffarelli
- Clinica Pediatrica Unit, Department of Medicine and Surgery, University of Parma, 43126 Parma, Italy.
| | - Dora Di Mauro
- Clinica Pediatrica Unit, Department of Medicine and Surgery, University of Parma, 43126 Parma, Italy.
| | - Carla Mastrorilli
- Clinica Pediatrica Unit, Department of Medicine and Surgery, University of Parma, 43126 Parma, Italy.
| | - Paolo Bottau
- Pediatria, Azienda Ospedaliera di Imola, Via Montericco 4, 40026 Imola, Italy.
| | - Francesca Cipriani
- Pediatric Unit, Department of Medical and Surgical Sciences, University of Bologna, Via Massarenti 11, 40138 Bologna, Italy.
| | - Giampaolo Ricci
- Pediatric Unit, Department of Medical and Surgical Sciences, University of Bologna, Via Massarenti 11, 40138 Bologna, Italy.
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Bedolla-Barajas M, Morales-Romero J, Gaxiola-Arredondo BY, Alcalá-Padilla G, Romero-Velarde E. Prolonged breastfeeding and delayed introduction of whole cow's milk into the diet are factors associated with egg sensitization: A matched case-control study. Allergol Immunopathol (Madr) 2018; 46:539-545. [PMID: 29739686 DOI: 10.1016/j.aller.2018.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Revised: 12/27/2017] [Accepted: 01/03/2018] [Indexed: 11/18/2022]
Abstract
BACKGROUND Both breastfeeding and the moment at which introduction to solid food occurs have been associated with food allergy. OBJECTIVE To evaluate whether prolonged breastfeeding and the delayed introduction of whole cow's milk into an infant's diet are factors that can be associated with egg sensitization. METHODS This was a hospital-based case-control study, matched by age and sex: each study group comprised 97 atopic children. Additionally, logistic regression was used to identify the factors associated with egg protein sensitization. RESULTS The most common type of allergic disease among both groups was allergic rhinitis. After adjusting for possible confounding variables, a delayed introduction to whole cow's milk decreased the odds of egg protein sensitization; OR=0.16 (95% CI: 0.07-0.36, p<0.0001). Notably, breastfeeding during the first six months of life, regardless of whether it was the only milk an infant drank, increased the risk for sensitization to chicken eggs; OR=5.54 (95% CI: 2.41-12.7, p<0.0001). CONCLUSION Prolonged breastfeeding, regardless of whether it was the only milk an infant drank, greatly increased the risk of egg sensitization. Interestingly, a delayed introduction to whole cow's milk was associated with a reduced possibility of becoming sensitized to eggs. Further studies are required to elucidate these findings.
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Affiliation(s)
- M Bedolla-Barajas
- Servicio de Alergia e Inmunología Clínica, Hospital Civil de Guadalajara "Dr. Juan I. Menchaca", Salvador de Quevedo y Zubieta No. 750, Colonia La Perla, C. P. 44340, Guadalajara, Jalisco, Mexico.
| | - J Morales-Romero
- Instituto de Salud Pública, Universidad Veracruzana, Av. Luis Castelazo Ayala s/n., Colonia Industrial Ánimas, C. P. 91190, Xalapa, Veracruz, Mexico
| | - B Y Gaxiola-Arredondo
- Servicio de Alergología e Inmunología Clínica, Hospital Civil de Guadalajara "Fray Antonio Alcalde", Coronel Calderón No. 777, Colonia El Retiro, C. P. 44280, Guadalajara, Jalisco, Mexico
| | - G Alcalá-Padilla
- Servicio de Alergología e Inmunología Clínica, Hospital Civil de Guadalajara "Fray Antonio Alcalde", Coronel Calderón No. 777, Colonia El Retiro, C. P. 44280, Guadalajara, Jalisco, Mexico
| | - E Romero-Velarde
- División de Pediatría, Hospital Civil de Guadalajara "Dr. Juan I. Menchaca", Salvador de Quevedo y Zubieta No. 750, Colonia La Perla, C. P. 44340, Guadalajara, Jalisco, Mexico
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20
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Lu Y, Li S, Xu H, Zhang T, Lin X, Wu X. Effect of Covalent Interaction with Chlorogenic Acid on the Allergenic Capacity of Ovalbumin. J Agric Food Chem 2018; 66:9794-9800. [PMID: 30165028 DOI: 10.1021/acs.jafc.8b03410] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Ovalbumin (OVA) is a major allergen in avian egg white. Here, we investigated the conjugation of OVA and chlorogenic acid (CHA) to reduce the allergenic capacity of OVA. OVA-CHA conjugate was characterized by SDS-PAGE, MALDI-TOF-MS, differential scanning calorimetry, and multispectroscopic methods. Sites of the OVA-CHA conjugate were identified by LC-MS/MS. CHA possibly conjugated with Lys20 and Lys17 in OVA, which resulted in the unfolding of OVA. ELISA and Western blot assay indicated that the OVA-CHA conjugate reduced the IgE binding capacity of OVA. The results also indicated that the ability of the OVA-CHA conjugate to activate histamine release was reduced. The decreased allergenic capacity of OVA was attributed to changes in the protein structure. Moreover, the CHA binding site in OVA might directly shield the linear IgE epitope, thereby reducing the IgE binding ability. Also, the OVA-CHA conjugate showed high antioxidant activity. OVA conjugated with CHA may be a promising method of OVA hyposensitization.
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Echeverria L, Martin-Muñoz MF, Martorell C, Belver MT, Alonso Lebrero E, Zapatero L, Fuentes V, Piqué M, Plaza A, Muñoz C, Martorell A, Blasco C, Villa B, Gómez C, Nevot S, García JM, Madero R. Clinical and immunological profile of children aged 5-9 years with persistent egg allergy before oral immunotherapy with egg. A multicenter, randomized controlled trial of the Spanish Society of Pediatric Allergy, Asthma and Clinical Immunology (SEICAP). Allergol Immunopathol (Madr) 2018; 46:415-420. [PMID: 29804794 DOI: 10.1016/j.aller.2018.01.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 01/18/2018] [Accepted: 01/25/2018] [Indexed: 11/15/2022]
Abstract
BACKGROUND In children with egg protein allergy (EA), the probability of overcoming the allergy decreases with age, and the possibility of suffering severe adverse reactions as a consequence of dietetic transgressions results in worsened quality of life. One treatment option in such cases is oral immunotherapy (OIT) with foods. METHODS We present a cohort of children with EA scheduled for OIT with pasteurized raw egg white, describing their clinical and allergic characteristics before the start of OIT. RESULTS The median age was six years, and 93% of the patients also suffered other allergies (58% asthma and 38.6% allergy to more than two food groups). In the last year, 14.8% had suffered a severe reaction due to dietetic transgression with egg. The median IgE specific of egg white titer was 38.5kU/l. A double-blind placebo-controlled food challenge with cooked egg white was performed, and if the test proved positive, it was repeated with pasteurized raw egg white. The mean symptoms-provoking dose was 1.26g and 0.55g for cooked egg white and raw egg white, respectively. An IgE specific of ovomucoid titer of <2.045kU/l differentiated those patients that tolerated cooked egg white. CONCLUSIONS OIT with egg is regarded as an option in patients with persistent egg allergy. In the previous challenge test, an IgE specific of ovomucoid titer of <2.045kU/l differentiates those patients that tolerate cooked egg white.
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Affiliation(s)
- L Echeverria
- Severo Ochoa University Hospital, Leganés, Madrid, Spain.
| | - M F Martin-Muñoz
- Idipaz, Institute for Health Research, La Paz University Hospital, Madrid, Spain
| | - C Martorell
- Valencia University General Hospital, Valencia, Spain
| | - M T Belver
- Idipaz, Institute for Health Research, La Paz University Hospital, Madrid, Spain
| | | | - L Zapatero
- Gregorio Marañón Hospital, Madrid, Spain
| | - V Fuentes
- Gregorio Marañón Hospital, Madrid, Spain
| | - M Piqué
- San Juan de Dios Hospital, Barcelona, Spain
| | - A Plaza
- San Juan de Dios Hospital, Barcelona, Spain
| | - C Muñoz
- Carlos Haya Hospital, Málaga, Spain
| | - A Martorell
- Valencia University General Hospital, Valencia, Spain
| | - C Blasco
- Vall Hebrón Hospital, Barcelona, Spain
| | - B Villa
- Vall Hebrón Hospital, Barcelona, Spain
| | - C Gómez
- Fundación Althaia San Juan de Dios Hospital, Sabadell, Barcelona, Spain
| | - S Nevot
- Fundación Althaia San Juan de Dios Hospital, Sabadell, Barcelona, Spain
| | | | - R Madero
- Idipaz, Institute for Health Research, La Paz University Hospital, Madrid, Spain
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Yang W, Tu Z, Wang H, Zhang L, Song Q. Glycation of ovalbumin after high-intensity ultrasound pretreatment: effects on conformation, immunoglobulin (Ig)G/IgE binding ability and antioxidant activity. J Sci Food Agric 2018; 98:3767-3773. [PMID: 29344948 DOI: 10.1002/jsfa.8890] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 10/26/2017] [Accepted: 01/11/2018] [Indexed: 06/07/2023]
Abstract
BACKGROUND Ovalbumin (OVA), a protein with excellent nutritional and processing properties, is the major allergen of hen egg white. High-intensity ultrasound treatment increases the immunoglobulin (Ig)G and IgE binding abilities by unfolding the conformational structure of OVA. This may allow a modification of the IgG and IgE binding of OVA by combining high-intensity ultrasound with other methods, such as glycation, thus representing a promising method for the improvement of protein properties. RESULTS Glycation with mannose (M) after ultrasound pretreatment at 0-600 W significantly reduced the IgG and IgE binding abilities and dramatically enhanced the antioxidant activity of OVA-M conjugates, with the lowest values of IgG and IgE binding and highest values of antioxidant capacity observed at 600 W. Polyacrylamide gel electrophoresis showed that the molecular weight of OVA-M conjugates with ultrasound pretreatment increased more than non-pretreatment sample, implying that ultrasound pretreatment promoted glycation. The α-helix content and ultraviolet absorption of OVA were observably increased, whereas β-sheet content, intrinsic fluorescence and surface hydrophobicity were notably decreased, indicating that the tertiary and secondary structures of OVA were markedly changed. CONCLUSION High-intensity ultrasound pretreatment can be conducive to reducing the binding abilities of IgG and IgE and enhancing the antioxidant activity of OVA-M conjugates. Therefore, glycation combined with high-intensity ultrasound pretreatment might be a promising method for producing hypo-allergenic and high-antioxidant OVA products. © 2018 Society of Chemical Industry.
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Affiliation(s)
- Wenhua Yang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi, China
| | - Zongcai Tu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi, China
- College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi, China
| | - Hui Wang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi, China
| | - Lu Zhang
- College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi, China
| | - Qidong Song
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi, China
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Mäntylä J, Thomander T, Hakulinen A, Kukkonen K, Palosuo K, Voutilainen H, Pelkonen A, Kauppi P. The effect of oral immunotherapy treatment in severe IgE mediated milk, peanut, and egg allergy in adults. Immun Inflamm Dis 2018; 6:307-311. [PMID: 29542268 PMCID: PMC5946145 DOI: 10.1002/iid3.218] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 01/23/2018] [Accepted: 02/15/2018] [Indexed: 11/08/2022] Open
Abstract
INTRODUCTION The standard care of severe food allergy in both adults and children means avoidance of allergens. In recent years promising results of oral immunotherapy (OIT) have been reported in children. In adults, information on OIT in severe food allergy is very limited. OBJECTIVE We aimed to study if OIT is possible in adults. METHODS We report OIT results in 10 adult patients with milk OIT, nine adult patients with peanut OIT, and four adult patients with egg OIT. The allergy was confirmed with allergen specific IgE tests and oral food challenges (open in milk allergy and double-blind in peanut and egg allergy). The OIT was performed as open. RESULTS The median dose of protein that led to discontinuation of allergen challenge because of symptoms was 7.5 mg in milk allergy, 25 mg in peanut allergy, and 15 mg in egg allergy. The median period of OIT was 515 days. Currently on OIT are 6/10 milk allergic patients, 4/9 peanut allergic patients and 3/4 egg allergic patients. The median dose of milk protein increased by 60-fold during OIT compared to the allergen challenge dose. In peanut OIT the median dose increased by eightfold and in egg allergy the dose increased with OIT by 35-fold. Local itching was the most common side effect of OIT (73.9% of the patients), four patients reported having used epinephrine autoinjector and three patients having needed emergency room treatment. CONCLUSIONS AND CLINICAL RELEVANCE OIT can be given in adult patients with severe milk, peanut, or egg allergy only in selected cases. OIT leads into desensitization but it is not clear whether persistent tolerance can be achieved. Mild adverse events during OIT are common.
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Affiliation(s)
- Jarkko Mäntylä
- Respiratory Diseases and AllergologyUniversity of Helsinki and Helsinki University Hospital, Skin and Allergy HospitalHelsinkiFinland
| | - Tuuli Thomander
- Respiratory Diseases and AllergologyUniversity of Helsinki and Helsinki University Hospital, Skin and Allergy HospitalHelsinkiFinland
- University of Eastern FinlandKuopioFinland
| | - Auli Hakulinen
- Respiratory Diseases and AllergologyUniversity of Helsinki and Helsinki University Hospital, Skin and Allergy HospitalHelsinkiFinland
| | - Kaarina Kukkonen
- Respiratory Diseases and AllergologyUniversity of Helsinki and Helsinki University Hospital, Skin and Allergy HospitalHelsinkiFinland
| | - Kati Palosuo
- Respiratory Diseases and AllergologyUniversity of Helsinki and Helsinki University Hospital, Skin and Allergy HospitalHelsinkiFinland
| | - Helena Voutilainen
- Respiratory Diseases and AllergologyUniversity of Helsinki and Helsinki University Hospital, Skin and Allergy HospitalHelsinkiFinland
| | - Anna Pelkonen
- Respiratory Diseases and AllergologyUniversity of Helsinki and Helsinki University Hospital, Skin and Allergy HospitalHelsinkiFinland
| | - Paula Kauppi
- Respiratory Diseases and AllergologyUniversity of Helsinki and Helsinki University Hospital, Skin and Allergy HospitalHelsinkiFinland
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Pablos-Tanarro A, Lozano-Ojalvo D, Molina E, López-Fandiño R. Assessment of the Allergenic Potential of the Main Egg White Proteins in BALB/c Mice. J Agric Food Chem 2018; 66:2970-2976. [PMID: 29493227 DOI: 10.1021/acs.jafc.8b00402] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
This work aimed to assess the contribution of the major egg white proteins, ovalbumin, ovomucoid, and lysozyme, to the induction and elicitation of allergenic responses. For this purpose, BALB/c mice were orally administered either the individual egg allergens or a mixture of the three proteins in the same proportion, to evaluate their relative allergenicity avoiding their different abundance in egg white. Cholera toxin was used as a T helper 2 (Th2)-polarizing adjuvant. Ovomucoid and lysozyme triggered the most severe anaphylaxis reactions upon oral challenge. In comparison to ovalbumin and ovomucoid, lysozyme was a more active promotor of early immunoglobulin E and immunoglobulin G1 production and stimulated stronger Th2-biased responses from both mesenteric lymph node and spleen cells. These results indicate that lysozyme is highly immunogenic and should be considered as a major allergen, whose clinical usefulness in the diagnosis, prognosis, and therapeutic approaches of egg allergy deserves further consideration.
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Affiliation(s)
- Alba Pablos-Tanarro
- Instituto de Investigación en Ciencias de la Alimentación (CIAL) , Consejo Superior de Investigaciones Científicas y Universidad Autónoma de Madrid (CSIC-UAM) , Nicolás Cabrera 8 , 28049 Madrid , Spain
| | - Daniel Lozano-Ojalvo
- Instituto de Investigación en Ciencias de la Alimentación (CIAL) , Consejo Superior de Investigaciones Científicas y Universidad Autónoma de Madrid (CSIC-UAM) , Nicolás Cabrera 8 , 28049 Madrid , Spain
| | - Elena Molina
- Instituto de Investigación en Ciencias de la Alimentación (CIAL) , Consejo Superior de Investigaciones Científicas y Universidad Autónoma de Madrid (CSIC-UAM) , Nicolás Cabrera 8 , 28049 Madrid , Spain
| | - Rosina López-Fandiño
- Instituto de Investigación en Ciencias de la Alimentación (CIAL) , Consejo Superior de Investigaciones Científicas y Universidad Autónoma de Madrid (CSIC-UAM) , Nicolás Cabrera 8 , 28049 Madrid , Spain
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Ando T, Kashiwakura JI, Itoh-Nagato N, Yamashita H, Baba M, Kawakami Y, Tsai SH, Inagaki N, Takeda K, Iwata T, Shimojo N, Fujisawa T, Nagao M, Matsumoto K, Kawakami Y, Kawakami T. Histamine-releasing factor enhances food allergy. J Clin Invest 2017; 127:4541-4553. [PMID: 29130935 PMCID: PMC5707161 DOI: 10.1172/jci96525] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 09/19/2017] [Indexed: 11/17/2022] Open
Abstract
Food allergy occurs due to IgE- and mast cell-dependent intestinal inflammation. Previously, we showed that histamine-releasing factor (HRF), a multifunctional protein secreted during allergy, interacts with a subset of IgE molecules and that the HRF dimer activates mast cells in an HRF-reactive IgE-dependent manner. In this study, we investigated whether HRF plays any role in food allergy. Specifically, we determined that prophylactic and therapeutic administration of HRF inhibitors that block HRF-IgE interactions reduces the incidence of diarrhea and mastocytosis in a murine model of food allergy. Food allergy-associated intestinal inflammation was accompanied by increased secretion of the HRF dimer into the intestine in response to proinflammatory, Th2, and epithelial-derived cytokines and HRF-reactive IgE levels at the elicitation phase. Consistent with these data, patients with egg allergy had higher blood levels of HRF-reactive IgE compared with individuals that were not hypersensitive. Successful oral immunotherapy in egg-allergy patients and food-allergic mice reduced HRF-reactive IgE levels, thereby suggesting a pathological role for HRF in food allergy. Together, these results suggest that antigen and HRF dimer amplify intestinal inflammation by synergistically activating mast cells and indicate that HRF has potential as a therapeutic target in food allergy.
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Affiliation(s)
- Tomoaki Ando
- Laboratory for Cytokine Regulation, RIKEN Center for Integrative Medical Sciences (RIKEN IMS), Yokohama, Japan
- Atopy Research Center, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Jun-ichi Kashiwakura
- Laboratory for Cytokine Regulation, RIKEN Center for Integrative Medical Sciences (RIKEN IMS), Yokohama, Japan
| | | | - Hirotaka Yamashita
- Laboratory of Pharmacology, Department of Bioactive Molecules, Gifu Pharmaceutical University, Gifu, Japan
| | - Minato Baba
- Division of Cell Biology, La Jolla Institute for Allergy and Immunology, La Jolla, California, USA
| | - Yu Kawakami
- Division of Cell Biology, La Jolla Institute for Allergy and Immunology, La Jolla, California, USA
| | - Shih Han Tsai
- Laboratory of Immune Regulation, Department of Microbiology and Immunology, Graduate School of Medicine, WPI Immunology Frontier Research Center, Osaka University, Suita, Osaka, Japan
- Core Research for Evolutional Science and Technology, Japan Science and Technology Agency, Saitama, Japan
| | - Naoki Inagaki
- Laboratory of Pharmacology, Department of Bioactive Molecules, Gifu Pharmaceutical University, Gifu, Japan
| | - Kiyoshi Takeda
- Laboratory of Immune Regulation, Department of Microbiology and Immunology, Graduate School of Medicine, WPI Immunology Frontier Research Center, Osaka University, Suita, Osaka, Japan
- Core Research for Evolutional Science and Technology, Japan Science and Technology Agency, Saitama, Japan
| | - Tsutomu Iwata
- Department of Education for Childcare, Faculty of Child Studies, Tokyo Kasei University, Tokyo, Japan
| | - Naoki Shimojo
- Department of Pediatrics, Graduate School of Medicine, Chiba University, Chiba, Japan
| | | | - Mizuho Nagao
- Institute for Clinical Research, Mie National Hospital, Tsu, Mie, Japan
| | - Kenji Matsumoto
- Department of Allergy and Clinical Immunology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Yuko Kawakami
- Division of Cell Biology, La Jolla Institute for Allergy and Immunology, La Jolla, California, USA
| | - Toshiaki Kawakami
- Division of Cell Biology, La Jolla Institute for Allergy and Immunology, La Jolla, California, USA
- Department of Dermatology, UCSD, School of Medicine, La Jolla, California, USA
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26
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Tang MLK, Koplin JJ, Sampson HA. Is Skin Testing or sIgE Testing Necessary Before Early Introduction of Peanut for Prevention of Peanut Allergy? J Allergy Clin Immunol Pract 2017; 6:408-413. [PMID: 28967547 DOI: 10.1016/j.jaip.2017.08.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 07/10/2017] [Accepted: 08/17/2017] [Indexed: 11/17/2022]
Affiliation(s)
- Mimi L K Tang
- Murdoch Childrens Research Institute, Parkville, Victoria, Australia; Department of Allergy and Immunology, Royal Children's Hospital, Parkville, Victoria, Australia; Department of Paediatrics, University of Melbourne, Parkville, Victoria, Australia.
| | - Jennifer J Koplin
- Murdoch Childrens Research Institute, Parkville, Victoria, Australia
| | - Hugh A Sampson
- Department of Pediatrics, Jaffe Food Allergy Institute, Icahn School of Medicine at Mount Sinai, New York, NY
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Yang WH, Tu ZC, Wang H, Li X, Tian M. High-intensity ultrasound enhances the immunoglobulin (Ig)G and IgE binding of ovalbumin. J Sci Food Agric 2017; 97:2714-2720. [PMID: 27747886 DOI: 10.1002/jsfa.8095] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 09/26/2016] [Accepted: 10/10/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND Hen eggs are widely used in food industry as a result of their excellent nutritional and processing properties and ovalbumin (OVA) is the major allergen of hen egg whites. Ultrasound has been widely used in the food processing industry, although the effect of high-intensity ultrasound on the immunoglobulin (Ig)G binding, IgE binding and conformational structure of OVA remains unclear. RESULTS Ultrasound treatment at 600-800 W dramatically increased the IgG and IgE binding of OVA, with the highest values observed at 600 W. The free sulfhydryl content, surface hydrophobicity and ultraviolet absorption were gradually increased when the power was increased from 200 to 600 W, implying the occurrence of molecule unfolding. When the power was 800 W, the binding ability was slightly decreased and was associated with the aggregation of OVA molecules. Polyacrylamide gel electrophoresis analysis implied that ultrasound treatment at 800 W could induce the aggregation of OVA molecules via disulfide bonds and/or hydrophobic interactions. CONCLUSION High-intensity ultrasound can increase the potential allergenicity of OVA. Therefore, high-intensity ultrasound processing of some egg products alone may improve the risk of an allergenic reaction in egg allergy patients to some extent. © 2016 Society of Chemical Industry.
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Affiliation(s)
- Wen-Hua Yang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, China
| | - Zong-Cai Tu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, China
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education and College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Hui Wang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, China
| | - Xue Li
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, China
| | - Ming Tian
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, China
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Martorell A, Alonso E, Echeverría L, Escudero C, García-Rodríguez R, Blasco C, Bone J, Borja-Segade J, Bracamonte T, Claver A, Corzo JL, De la Hoz B, Del Olmo R, Dominguez O, Fuentes-Aparicio V, Guallar I, Larramona H, Martín-Muñoz F, Matheu V, Michavila A, Ojeda I, Ojeda P, Piquer M, Poza P, Reche M, Rodríguez Del Río P, Rodríguez M, Ruano F, Sánchez-García S, Terrados S, Valdesoiro L, Vazquez-Ortiz M. Oral immunotherapy for food allergy: A Spanish guideline. Immunotherapy egg and milk Spanish guide (items guide). Part I: Cow milk and egg oral immunotherapy: Introduction, methodology, rationale, current state, indications contraindications and oral immunotherapy build-up phase. Allergol Immunopathol (Madr) 2017; 45:393-404. [PMID: 28662773 DOI: 10.1016/j.aller.2017.05.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Accepted: 05/19/2017] [Indexed: 12/21/2022]
Abstract
INTRODUCTION Cow's milk and egg are the most frequent causes of food allergy in the first years of life. Treatments such as oral immunotherapy (OIT) have been investigated as an alternative to avoidance diets. No clinical practice guides on the management of OIT with milk and egg are currently available. OBJECTIVES To develop a clinical guide on OIT based on the available scientific evidence and the opinions of experts. METHODS A review was made of studies published in the period between 1984 and June 2016, Doctoral Theses published in Spain, and summaries of communications at congresses (SEAIC, SEICAP, EAACI, AAAAI), with evaluation of the opinion consensus established by a group of experts pertaining to the scientific societies SEICAP and SEAIC. RESULTS Recommendations have been established regarding the indications, requirements and practical aspects of the different phases of OIT, as well as special protocols for patients at high risk of suffering adverse reactions. CONCLUSIONS A clinical practice guide is presented for the management of OIT with milk and egg, based on the opinion consensus of Spanish experts.
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Affiliation(s)
- A Martorell
- Department of Allergology, University General Hospital, Valencia, Spain.
| | - E Alonso
- Department of Pediatric Allergy, Gregorio Marañón Hospital, Madrid, Spain
| | - L Echeverría
- Department of Pediatric Allergy, Severo Ochoa University Hospital, Leganés, Spain
| | - C Escudero
- Department of Pediatric Allergy, Niño Jesús University Children's Hospital, Madrid, Spain
| | - R García-Rodríguez
- Department of Allergology, University General Hospital, Ciudad Real, Spain
| | - C Blasco
- Department of Pediatric Allergy, Vall d'Hebron Hospital, Barcelona, Spain
| | - J Bone
- Department of Pediatric Allergy, Miguel Servet University Hospital, Zaragoza, Spain
| | - J Borja-Segade
- Department of Allergology, University General Hospital, Ciudad Real, Spain
| | - T Bracamonte
- Department of Pediatric Allergy, Severo Ochoa University Hospital, Leganés, Spain
| | - A Claver
- Quirón Dexeus University Hospital, Barcelona, Spain
| | - J L Corzo
- Department of Pediatric Allergy, Carlos Haya University Hospital, Málaga, Spain
| | - B De la Hoz
- Department of Allergology, Ramón y Cajal Hospital, Madrid, Spain
| | - R Del Olmo
- Department of Pediatric Allergy, University Hospital, Móstoles, Spain
| | - O Dominguez
- Department of Pediatric Allergy, San Joan de Deu Hospital, Barcelona, Spain
| | | | - I Guallar
- Department of Pediatric Allergy, Miguel Servet University Hospital, Zaragoza, Spain
| | - H Larramona
- Department of Pediatric Allergy, Parc Taulí University Hospital, Sabadell, Spain
| | - F Martín-Muñoz
- Department of Allergology, La Paz Children's Hospital, Madrid, Spain
| | - V Matheu
- Allergology Unit-North Chest Hospital, Santa Cruz de Tenerife, Spain
| | - A Michavila
- Department of Pediatric Allergy, General Hospital, Castellón, Spain
| | | | | | - M Piquer
- Department of Pediatric Allergy, San Joan de Deu Hospital, Barcelona, Spain
| | - P Poza
- Allergology Unit-North Chest Hospital, Santa Cruz de Tenerife, Spain
| | - M Reche
- Department of Allergology, Infanta Sofía Hospital, San Sebastián de los Reyes, Spain
| | - P Rodríguez Del Río
- Department of Pediatric Allergy, Niño Jesús University Children's Hospital, Madrid, Spain
| | - M Rodríguez
- Department of Allergology, Alcorcón Foundation Hospital, Alcorcón, Spain
| | - F Ruano
- Department of Allergy, Infanta Leonor Hospital, Madrid, Spain
| | - S Sánchez-García
- Department of Pediatric Allergy, Niño Jesús University Children's Hospital, Madrid, Spain
| | - S Terrados
- Department of Pediatric Allergy, Ramón y Cajal Hospital, Madrid, Spain
| | - L Valdesoiro
- Department of Pediatric Allergy, Parc Taulí University Hospital, Sabadell, Spain
| | - M Vazquez-Ortiz
- Pediatric Allergy, Department of Medicine, Imperial College London, United Kingdom
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Claude M, Bouchaud G, Lupi R, Castan L, Tranquet O, Denery-Papini S, Bodinier M, Brossard C. How Proteins Aggregate Can Reduce Allergenicity: Comparison of Ovalbumins Heated under Opposite Electrostatic Conditions. J Agric Food Chem 2017; 65:3693-3701. [PMID: 28434227 DOI: 10.1021/acs.jafc.7b00676] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Heated foods are recommended for avoiding sensitization to food proteins, but depending on the physicochemical conditions during heating, more or less unfolded proteins aggregate differently. Whether the aggregation process could modulate allergenicity was investigated. Heating ovalbumin in opposite electrostatic conditions led to small (A-s, about 50 nm) and large (A-L, about 65 μm) aggregates that were used to sensitize mice. The symptoms upon oral challenge and rat basophil leukemia degranulation with native ovalbumin differed on the basis of which aggregates were used during the sensitization. Immunoglobulin-E (IgE) production was significantly lower with A-s than with A-L. Although two common linear IgE-epitopes were found, the aggregates bound and cross-linked IgE similarly or differently, depending on the sensitizing aggregate. The ovalbumin aggregates thus displayed a lower allergenic potential when formed under repulsive rather than nonrepulsive electrostatic conditions. This further demonstrates that food structure modulates the immune response during the sensitization phase with some effects on the elicitation phase of an allergic reaction and argues for the need to characterize the aggregation state of allergens.
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Affiliation(s)
- Mathilde Claude
- UR 1268 Biopolymers Interactions Assemblies, INRA , Nantes, France
| | - Grégory Bouchaud
- UR 1268 Biopolymers Interactions Assemblies, INRA , Nantes, France
| | - Roberta Lupi
- UR 1268 Biopolymers Interactions Assemblies, INRA , Nantes, France
| | - Laure Castan
- UR 1268 Biopolymers Interactions Assemblies, INRA , Nantes, France
- UMR 1087 Institut du Thorax, INSERM , Nantes, France
| | - Olivier Tranquet
- UR 1268 Biopolymers Interactions Assemblies, INRA , Nantes, France
| | | | - Marie Bodinier
- UR 1268 Biopolymers Interactions Assemblies, INRA , Nantes, France
| | - Chantal Brossard
- UR 1268 Biopolymers Interactions Assemblies, INRA , Nantes, France
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Lee JO, Sung D, Park SH, Lee J, Kim J, Shon DH, Ahn K, Han Y. Effect of acid treatment on allergenicity of peanut and egg. J Sci Food Agric 2017; 97:2116-2121. [PMID: 27571929 DOI: 10.1002/jsfa.8017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Revised: 08/10/2016] [Accepted: 08/25/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND Many food experts have studied various treatments or processing techniques in order to develop hypoallergenic foods. In a previous study, acid treatment dramatically mitigated the allergenicity of peanut, especially Ara h 2. RESULTS Gel electrophoresis showed that most protein bands of acid-treated peanut were not detected, but protein bands of egg white became weaker and broader by acid treatment. In immunoblotting using a rabbit antibody, the antigenicity against ovalbumin or ovomucoid in acid-treated egg white was decreased but the antigenicity against Ara h 1 or Ara h 2 in peanut treated with pH 2 acetic acid was completely undetected. The allergenicity of ovalbumin and peanut fell significantly to 1/1022 and 1/5380, respectively, when measured as IC50 in the sample treated with pH 2.0 acetic acid. CONCLUSION This study showed that acid treatment was more effective in peanut and barely effective in ovomucoid. This may contribute to the development of hypoallergenic food and clinical management of food allergy. © 2016 Society of Chemical Industry.
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Affiliation(s)
- Jeong-Ok Lee
- Environmental Health Center for Atopic Diseases, Samsung Medical Center, Seoul, Korea
| | - Dongeun Sung
- Department of Food Science and Technology, College of Engineering, Ewha Womans University, Seoul, Korea
| | - Su Hwa Park
- Environmental Health Center for Atopic Diseases, Samsung Medical Center, Seoul, Korea
| | - Jinyoung Lee
- Environmental Health Center for Atopic Diseases, Samsung Medical Center, Seoul, Korea
| | - Jihyun Kim
- Environmental Health Center for Atopic Diseases, Samsung Medical Center, Seoul, Korea
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Dong-Hwa Shon
- Research Group of Nutraceuticals for Metabolic Syndrome Division of Functional Food Research, Korea Food Research Institute, Gyeonggi, Korea
- Food Biotechnology Program, Korea University of Science and Technology, Daejeon 305-350, Korea
| | - Kangmo Ahn
- Environmental Health Center for Atopic Diseases, Samsung Medical Center, Seoul, Korea
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Youngshin Han
- Department of Medical Science, Sungkyunkwan University School of Medicine, Seoul, Korea
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Sato S, Ogura K, Takahashi K, Sato Y, Yanagida N, Ebisawa M. Usefulness of antigen-specific IgE probability curves derived from the 3gAllergy assay in diagnosing egg, cow's milk, and wheat allergies. Allergol Int 2017; 66:296-301. [PMID: 27523600 DOI: 10.1016/j.alit.2016.06.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Revised: 06/21/2016] [Accepted: 06/28/2016] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND Specific IgE (sIgE) antibody detection using the Siemens IMMULITE® 3gAllergy™ (3gAllergy) assay have not been sufficiently examined for the diagnosis of food allergy. The aim of this study was to evaluate the utility of measuring sIgE levels using the 3gAllergy assay to diagnose allergic reactions to egg, milk, and wheat. METHODS This retrospective study was conducted on patients with diagnosed or suspected allergies to egg, milk and wheat. Patients were divided into two groups according to their clinical reactivity to these allergens based on oral food challenge outcomes and/or convincing histories of immediate reaction to causative food(s). The sIgE levels were measured using 3gAllergy and ImmunoCAP. Predicted probability curves were estimated using logistic regression analysis. RESULTS We analyzed 1561 patients, ages 0-19 y (egg = 436, milk = 499, wheat = 626). The sIgE levels determined using 3gAllergy correlated with those of ImmunoCAP, classifying 355 patients as symptomatic: egg = 149, milk = 123, wheat = 83. 3gAllergy sIgE levels were significantly higher in symptomatic than in asymptomatic patients (P < 0.0001). Predictive probability for positive food allergy was significantly increased and correlated with increased sIgE levels. The cut-offs for allergic reaction with 95% predictive probability as determined by the 3gAllergy probability curves were different from those of ImmunoCAP. CONCLUSIONS Measurements of sIgE against egg, milk, and wheat as determined by 3gAllergy may be used as a tool to facilitate the diagnosis of food allergy in subjects with suspected food allergies. However, these probability curves should not be applied interchangeably between different assays.
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Affiliation(s)
- Sakura Sato
- Department of Allergy, Clinical Research Center for Allergology and Rheumatology, Sagamihara National Hospital, Kanagawa, Japan.
| | - Kiyotake Ogura
- Department of Pediatrics, Sagamihara National Hospital, Kanagawa, Japan
| | - Kyohei Takahashi
- Department of Pediatrics, Sagamihara National Hospital, Kanagawa, Japan
| | - Yasunori Sato
- Department of Biostatistics, Clinical Research Center, Chiba University, Chiba, Japan
| | - Noriyuki Yanagida
- Department of Pediatrics, Sagamihara National Hospital, Kanagawa, Japan
| | - Motohiro Ebisawa
- Department of Allergy, Clinical Research Center for Allergology and Rheumatology, Sagamihara National Hospital, Kanagawa, Japan
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Dhanapala P, Withanage-Dona D, Tang MLK, Doran T, Suphioglu C. Hypoallergenic Variant of the Major Egg White Allergen Gal d 1 Produced by Disruption of Cysteine Bridges. Nutrients 2017; 9:E171. [PMID: 28230769 PMCID: PMC5331602 DOI: 10.3390/nu9020171] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 02/09/2017] [Accepted: 02/15/2017] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Gal d 1 (ovomucoid) is the dominant allergen in the chicken egg white. Hypoallergenic variants of this allergen can be used in immunotherapy as an egg allergy treatment approach. We hypothesised that disruption of two of the nine cysteine-cysteine bridges by site-directed mutagenesis will allow the production of a hypoallergenic variant of the protein; Methods: Two cysteine residues at C192 and C210 in domain III of the protein were mutated to alanine using site-directed mutagenesis, to disrupt two separate cysteine-cysteine bridges. The mutated and non-mutated proteins were expressed in Escherichia coli (E. coli) by induction with isopropyl β-d-1-thiogalactopyranoside (IPTG). The expressed proteins were analysed using sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) and immunoblotting to confirm expression. Immunoglobulin E (IgE) reactivity of the two proteins was analysed, by immunoblotting, against a pool of egg-allergic patients' sera. A pool of non-allergic patients' sera was also used in a separate blot as a negative control; Results: Mutant Gal d 1 showed diminished IgE reactivity in the immunoblot by showing lighter bands when compared to the non-mutated version, although there was more of the mutant protein immobilised on the membrane when compared to the wild-type protein. The non-allergic negative control showed no bands, indicating an absence of non-specific binding of secondary antibody to the proteins; Conclusion: Disruption of two cysteine bridges in domain III of Gal d 1 reduces IgE reactivity. Following downstream laboratory and clinical testing, this mutant protein can be used in immunotherapy to induce tolerance to Gal d 1 and in egg allergy diagnosis.
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Affiliation(s)
- Pathum Dhanapala
- Neuro Allergy Research Laboratory (NARL), School of Life and Environmental Sciences, Faculty of Science, Engineering and Built Environment, Deakin University, 75 Pigdons Road, Geelong 3216 VIC, Australia.
- Australian Animal Health Laboratory (AAHL), Biosecurity Flagship, Commonwealth Scientific and Industrial Research Organisation (CSIRO), 5 Portarlington Road, East Geelong 3219 VIC, Australia.
- Poultry CRC, P.O. Box U242, University of New England, Armidale 2351 NSW, Australia.
- Department of Orthopedic Surgery, Brigham and Women's Hospital, Harvard Medical School, 60 Fenwood Road, Boston, 02115 MA, USA.
| | - Dulashi Withanage-Dona
- Neuro Allergy Research Laboratory (NARL), School of Life and Environmental Sciences, Faculty of Science, Engineering and Built Environment, Deakin University, 75 Pigdons Road, Geelong 3216 VIC, Australia.
| | - Mimi L K Tang
- Department of Allergy and Immunology, Royal Children's Hospital, 50 Flemington Road, Parkville 3052 VIC, Australia.
- Allergy and Immune Disorders, Murdoch Children's Research Institute, 50 Flemington Road, Parkville 3052 VIC, Australia.
- The University of Melbourne, Parkville 3010 VIC, Australia.
| | - Tim Doran
- Australian Animal Health Laboratory (AAHL), Biosecurity Flagship, Commonwealth Scientific and Industrial Research Organisation (CSIRO), 5 Portarlington Road, East Geelong 3219 VIC, Australia.
- Poultry CRC, P.O. Box U242, University of New England, Armidale 2351 NSW, Australia.
| | - Cenk Suphioglu
- Neuro Allergy Research Laboratory (NARL), School of Life and Environmental Sciences, Faculty of Science, Engineering and Built Environment, Deakin University, 75 Pigdons Road, Geelong 3216 VIC, Australia.
- Poultry CRC, P.O. Box U242, University of New England, Armidale 2351 NSW, Australia.
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Natsume O, Kabashima S, Nakazato J, Yamamoto-Hanada K, Narita M, Kondo M, Saito M, Kishino A, Takimoto T, Inoue E, Tang J, Kido H, Wong GWK, Matsumoto K, Saito H, Ohya Y. Two-step egg introduction for prevention of egg allergy in high-risk infants with eczema (PETIT): a randomised, double-blind, placebo-controlled trial. Lancet 2017; 389:276-286. [PMID: 27939035 DOI: 10.1016/s0140-6736(16)31418-0] [Citation(s) in RCA: 220] [Impact Index Per Article: 31.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 08/03/2016] [Accepted: 08/12/2016] [Indexed: 11/17/2022]
Abstract
BACKGROUND Evidence is accumulating that early consumption is more beneficial than is delayed introduction as a strategy for primary prevention of food allergy. However, allergic reactions caused by early introduction of such solid foods have been a problematic issue. We investigated whether or not early stepwise introduction of eggs to infants with eczema combined with optimal eczema treatment would prevent egg allergy at 1 year of age. METHODS In this randomised, double-blind, placebo-controlled trial, we enrolled infants 4-5 months of age with eczema from two centres in Japan. Exclusion criteria were being born before 37 weeks of gestational age, experience of ingestion of hen's eggs or egg products, history of immediate allergic reaction to hen's eggs, history of non-immediate allergic reaction to a particular type of food, and complications of any severe disease. Infants were randomly assigned (block size of four; stratified by institution and sex) to early introduction of egg or placebo (1:1). Participants in the egg group consumed orally 50 mg of heated egg powder per day from 6 months to 9 months of age and 250 mg per day thereafter until 12 months of age. We aggressively treated participants' eczema at entry and maintained control without exacerbations throughout the intervention period. Participants and physicians were masked to assignment, and allocation was concealed. The primary outcome was the proportion of participants with hen's egg allergy confirmed by open oral food challenges at 12 months of age, assessed blindly by standardised methods, in all randomly allocated participants who received the intervention. This trial is registered with the University Hospital Medical Information Network Clinical Trials Registry, number UMIN000008673. FINDINGS Between Sept 18, 2012, and Feb 13, 2015, we randomly allocated 147 participants (73 [50%] to the egg group and 74 [50%] to the placebo group). This trial was terminated on the basis of the results of the scheduled interim analysis of 100 participants, which showed a significant difference between the two groups (four [9%] of 47 participants had an egg allergy in the egg group vs 18 [38%] of 47 in the placebo group; risk ratio 0·222 [95% CI 0·081-0·607]; p=0·0012). In the primary analysis population, five (8%) of 60 participants had an egg allergy in the egg group compared with 23 (38%) of 61 in the placebo group (risk ratio 0·221 [0·090-0·543]; p=0·0001). The only difference in adverse events between groups was admissions to hospital (six [10%] of 60 in the egg group vs none in the placebo group; p=0·022). 19 acute events occurred in nine (15%) participants in the egg group versus 14 events in 11 (18%) participants in the placebo group after intake of the trial powder. INTERPRETATION Introduction of heated egg in a stepwise manner along with aggressive eczema treatment is a safe and efficacious way to prevent hen's egg allergy in high-risk infants. In this study, we developed a practical approach to overcome the second wave of the allergic epidemic caused by food allergy. FUNDING Ministry of Health, Labour and Welfare, and National Centre for Child Health and Development, Japan.
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Affiliation(s)
- Osamu Natsume
- Division of Allergy, Department of Medical Subspecialties, National Center for Child Health and Development; Okura, Setagaya-Ku, Tokyo, Japan; Division of Pediatrics, Hamamatsu University School of Medicine; Handayama, Higashiku, Hamamatsu, Shizuoka, Japan
| | - Shigenori Kabashima
- Division of Allergy, Department of Medical Subspecialties, National Center for Child Health and Development; Okura, Setagaya-Ku, Tokyo, Japan; Division of Pediatrics, Tachikawa Sougo General Hospital; Nishiki-Cho, Tachikawa, Tokyo, Japan
| | - Junko Nakazato
- Division of Allergy, Department of Medical Subspecialties, National Center for Child Health and Development; Okura, Setagaya-Ku, Tokyo, Japan; Division of Pediatrics, Kanemura Ladies Clinic; Minami-Iriso, Hazama, Saitama, Japan
| | - Kiwako Yamamoto-Hanada
- Division of Allergy, Department of Medical Subspecialties, National Center for Child Health and Development; Okura, Setagaya-Ku, Tokyo, Japan
| | - Masami Narita
- Division of Allergy, Department of Medical Subspecialties, National Center for Child Health and Development; Okura, Setagaya-Ku, Tokyo, Japan
| | - Mai Kondo
- Division of Allergy, Department of Medical Subspecialties, National Center for Child Health and Development; Okura, Setagaya-Ku, Tokyo, Japan; Division of Pediatrics, Oume Municipal General Hospital; Higashi-Oume, Oume, Tokyo, Japan
| | - Mayako Saito
- Division of Allergy, Department of Medical Subspecialties, National Center for Child Health and Development; Okura, Setagaya-Ku, Tokyo, Japan
| | - Ai Kishino
- Division of Allergy, Department of Medical Subspecialties, National Center for Child Health and Development; Okura, Setagaya-Ku, Tokyo, Japan; Division of Pediatrics, Tokyo Bay UrayasuIchikawa Medical Center, Pediatrics, Toudaizima, Urayasu, Chiba, Japan
| | - Tetsuya Takimoto
- Center for Clinical Research and Development, National Center for Child Health and Development, Okura, Setagaya, Tokyo, Japan
| | - Eisuke Inoue
- Center for Clinical Research and Development, National Center for Child Health and Development, Okura, Setagaya, Tokyo, Japan
| | - Julian Tang
- Center for Clinical Research and Development, National Center for Child Health and Development, Okura, Setagaya, Tokyo, Japan
| | - Hiroshi Kido
- Division of Enzyme Chemistry, Institute for Enzyme Research, Tokushima University, Tokushima, Japan
| | - Gary W K Wong
- Department of Pediatrics and School of Public Health, Prince of Wales Hospital, Faculty of Medicine, Chinese University of Hong Kong, Hong Kong, China
| | - Kenji Matsumoto
- Department of Allergy and Clinical Immunology, National Research Institute for Child Health and Development, Okura, Setagaya, Tokyo, Japan
| | - Hirohisa Saito
- Department of Allergy and Clinical Immunology, National Research Institute for Child Health and Development, Okura, Setagaya, Tokyo, Japan
| | - Yukihiro Ohya
- Division of Allergy, Department of Medical Subspecialties, National Center for Child Health and Development; Okura, Setagaya-Ku, Tokyo, Japan.
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Martín-Muñoz MF, Diaz-Perales A, Cannabal J, Quirce S. Anaphylaxis to hidden potato allergens in a peach and egg allergic boy. Eur Ann Allergy Clin Immunol 2017; 49:45-48. [PMID: 28120607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
More than 170 foods have been identified as being potentially allergenic. However, a minority of these foods cause the majority of reactions. Sweets are frequently implicated in allergic reactions in children with cow's milk, egg, nuts or fruits allergy, and they are the most relevant foods investigated as responsible allergens. We report an anaphylactic reaction to candies in an egg and peach allergic boy. We performed a study to identify responsible allergens for the reaction. We investigated hidden egg and peach allergens in the candies, but they were not found. Finally, the causative allergen resulted to be a vegetable protein from potato peel. We diagnosed a new allergy in our patient and Sol t 4 was identified as the responsible allergen of the anaphylactic reaction. We conclude that responsible allergens should always be studied and identified in whatever allergic reaction in order to prevent new reactions.
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Affiliation(s)
- M F Martín-Muñoz
- Allergy Department, Hospital La Paz Instituto de Investigacion (idiPaz), Madrid, Spain. Phone: +34 62 649 3341 E-mail:
| | - A Diaz-Perales
- Center for Plant Biotechnology and Genomic (UPM-INIA), Madrid, Spain
| | - J Cannabal
- Allergy Department, Hospital La Paz Instituto de Investigacion (idiPaz), Madrid, Spain
| | - S Quirce
- Allergy Department, Hospital La Paz Instituto de Investigacion (idiPaz), Madrid, Spain
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Kosoy R, Agashe C, Grishin A, Leung DY, Wood RA, Sicherer SH, Jones SM, Burks AW, Davidson WF, Lindblad RW, Dawson P, Merad M, Kidd BA, Dudley JT, Sampson HA, Berin MC. Transcriptional Profiling of Egg Allergy and Relationship to Disease Phenotype. PLoS One 2016; 11:e0163831. [PMID: 27788149 PMCID: PMC5082817 DOI: 10.1371/journal.pone.0163831] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Accepted: 09/14/2016] [Indexed: 11/19/2022] Open
Abstract
Background Egg allergy is one of the most common food allergies of childhood. There is a lack of information on the immunologic basis of egg allergy beyond the role of IgE. Objective To use transcriptional profiling as a novel approach to uncover immunologic processes associated with different phenotypes of egg allergy. Methods Peripheral blood mononuclear cells (PBMCs) were obtained from egg-allergic children who were defined as reactive (BER) or tolerant (BET) to baked egg, and from food allergic controls (AC) who were egg non-allergic. PBMCs were stimulated with egg white protein. Gene transcription was measured by microarray after 24 h, and cytokine secretion by multiplex assay after 5 days. Results The transcriptional response of PBMCs to egg protein differed between BER and BET versus AC subjects. Compared to the AC group, the BER group displayed increased expression of genes associated with allergic inflammation as well as corresponding increased secretion of IL-5, IL-9 and TNF-α. A similar pattern was observed for the BET group. Further similarities in gene expression patterns between BER and BET groups, as well as some important differences, were revealed using a novel Immune Annotation resource developed for this project. This approach identified several novel processes not previously associated with egg allergy, including positive associations with TLR4-stimulated myeloid cells and activated NK cells, and negative associations with an induced Treg signature. Further pathway analysis of differentially expressed genes comparing BER to BET subjects showed significant enrichment of IFN-α and IFN-γ response genes, as well as genes associated with virally-infected DCs. Conclusions Transcriptional profiling identified several novel pathways and processes that differed when comparing the response to egg allergen in BET, BER, and AC groups. We conclude that this approach is a useful hypothesis-generating mechanism to identify novel immune processes associated with allergy and tolerance to forms of egg.
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Affiliation(s)
- Roman Kosoy
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States of America
| | - Charuta Agashe
- Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY, United States of America
| | - Alexander Grishin
- Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY, United States of America
| | - Donald Y. Leung
- Department of Pediatrics, National Jewish Health, Denver, CO, United States of America
| | - Robert A. Wood
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, United States of America
| | - Scott H. Sicherer
- Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY, United States of America
| | - Stacie M. Jones
- Department of Pediatrics, University of Arkansas for Medical Sciences and Arkansas Children's Hospital, Little Rock, AR, United States of America
| | - A. Wesley Burks
- Department of Pediatrics, University of North Carolina, Chapel Hill, NC, United States of America
| | - Wendy F. Davidson
- National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD, United States of America
| | | | - Peter Dawson
- EMMES Corporation, Rockville, MD, United States of America
| | - Miriam Merad
- Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States of America
| | - Brian A. Kidd
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States of America
| | - Joel T. Dudley
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States of America
| | - Hugh A. Sampson
- Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY, United States of America
| | - M. Cecilia Berin
- Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY, United States of America
- * E-mail:
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Bellach J, Schwarz V, Ahrens B, Trendelenburg V, Aksünger Ö, Kalb B, Niggemann B, Keil T, Beyer K. Randomized placebo-controlled trial of hen's egg consumption for primary prevention in infants. J Allergy Clin Immunol 2016; 139:1591-1599.e2. [PMID: 27523961 DOI: 10.1016/j.jaci.2016.06.045] [Citation(s) in RCA: 146] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Revised: 06/03/2016] [Accepted: 06/16/2016] [Indexed: 11/20/2022]
Abstract
BACKGROUND Hen's egg is the most common cause of food allergy in early childhood. OBJECTIVE We investigated the efficacy and safety of early hen's egg introduction at age 4 to 6 months to prevent hen's egg allergy in the general population. METHODS This randomized, placebo-controlled trial included 4- to 6-month-old infants who were not sensitized against hen's egg, as determined based on specific serum antibodies (IgE). These infants were randomized to receive either verum (egg white powder) or placebo (rice powder) added to the first weaning food 3 times a week under a concurrent egg-free diet from age 4 to 6 until 12 months. The primary outcome was sensitization to hen's egg (increased specific serum IgE levels) by age 12 months. Hen's egg allergy (secondary outcome) was confirmed by double-blind, placebo-controlled food challenges. RESULTS Among 406 screened infants, 23 (5.7%) had hen's egg-specific IgE before randomization. Seventeen of 23 underwent subsequent double-blind, placebo-controlled food challenges, and 16 were confirmed as allergic, including 11 with anaphylactic reactions. Of the 383 nonsensitized infants (56.7% male), 184 were randomized to verum and 199 to placebo. At 12 months of age, 5.6% of the children in the verum group were hen's egg sensitized versus 2.6% in the placebo group (primary outcome; relative risk, 2.20; 95% CI, 0.68-7.14; P = .24), and 2.1% were confirmed to have hen's egg allergy versus 0.6% in the placebo group (relative risk, 3.30; 95% CI, 0.35-31.32; P = .35). CONCLUSION We found no evidence that consumption of hen's egg starting at 4 to 6 months of age prevents hen's egg sensitization or allergy. In contrast, it might result in frequent allergic reactions in the community considering that many 4- to 6-month-old infants were already allergic to hen's egg.
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Affiliation(s)
- Johanna Bellach
- Department of Paediatric Pneumology and Immunology, Charité-Universitätsmedizin, Berlin, Germany
| | - Veronika Schwarz
- Department of Paediatric Pneumology and Immunology, Charité-Universitätsmedizin, Berlin, Germany
| | - Birgit Ahrens
- Department of Paediatric Pneumology and Immunology, Charité-Universitätsmedizin, Berlin, Germany
| | - Valérie Trendelenburg
- Department of Paediatric Pneumology and Immunology, Charité-Universitätsmedizin, Berlin, Germany
| | - Özlem Aksünger
- Department of Paediatric Pneumology and Immunology, Charité-Universitätsmedizin, Berlin, Germany
| | - Birgit Kalb
- Department of Paediatric Pneumology and Immunology, Charité-Universitätsmedizin, Berlin, Germany
| | - Bodo Niggemann
- Department of Paediatric Pneumology and Immunology, Charité-Universitätsmedizin, Berlin, Germany
| | - Thomas Keil
- Institute for Social Medicine, Epidemiology and Health Economics, Charité-Universitätsmedizin-Berlin, Berlin, Germany
| | - Kirsten Beyer
- Department of Paediatric Pneumology and Immunology, Charité-Universitätsmedizin, Berlin, Germany; Icahn School of Medicine at Mount Sinai, New York, NY.
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Martín-Muñoz MF, Pineda F, García Parrado G, Guillén D, Rivero D, Belver T, Quirce S. Food allergy in breastfeeding babies. Hidden allergens in human milk. Eur Ann Allergy Clin Immunol 2016; 48:123-128. [PMID: 27425167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
BACKGORUND Food allergy is a rare disorder among breastfeeding babies. OBJECTIVE Our aim was to identify responsible allergens in human milk. METHODS We studied babies developing allergic symptoms at the time they were breastfeeding. Skin prick tests (SPT) were performed with breast milk and food allergens. Specific IgE was assessed and IgE Immunoblotting experiments with breast milk were carried out to identify food allergens. Clinical evolution was evaluated after a maternal free diet. RESULTS Five babies had confirmed breast milk allergy. Peanut, white egg and/or cow's milk were demonstrated as the hidden responsible allergens. No baby returned to develop symptoms once mother started a free diet. Three of these babies showed tolerance to other food allergens identified in human milk. CONCLUSION A maternal free diet should be recommended only if food allergy is confirmed in breastfed babies.
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Affiliation(s)
- M F Martín-Muñoz
- Department of Allergy, Hospital La Paz Health Research Institute (IdiPAZ), Madrid, Spain. Phone: +34 62 649 3341 Fax: +34 727 7050 E-mail: ;
| | - F Pineda
- Diater Laboratories, R&D Department, Madrid, Spain
| | | | - D Guillén
- Department of Allergy, Hospital La Paz Health Research Institute (IdiPAZ), Madrid, Spain
| | - D Rivero
- Department of Allergy, Hospital La Paz Health Research Institute (IdiPAZ), Madrid, Spain
| | - T Belver
- Department of Allergy, Hospital La Paz Health Research Institute (IdiPAZ), Madrid, Spain
| | - S Quirce
- Department of Allergy, Hospital La Paz Health Research Institute (IdiPAZ), Madrid, Spain
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Yanagida N, Sato S, Ebisawa M. [METHODS OF INGESTION IN ORAL FOOD CHALLENGE TESTS USING WHOLE-EGG POWDER]. Arerugi 2016; 65:193-199. [PMID: 27193928 DOI: 10.15036/arerugi.65.193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
BACKGROUND AND OBJECTIVE Preparation of the food for an oral food challenge (OFC) test is complicated. We prospectively examined the results of an inpatient oral food challenge test involving the use of juice containing whole-egg powder (egg juice) prepared by NH Foods Ltd. and conducted in the Department of Pediatrics of Sagamihara National Hospital. METHODS AND SUBJECTS We prospectively evaluated the results of an egg-juice (equivalent to half of an egg) OFC test conducted in Sagamihara National Hospital between September 2014 and April 2015 in 116 cases for diagnosis or tolerance acquisition. RESULTS The OFC test positivity rate was 33%. Severity according to the anaphylaxis guidelines was grade 1 (mild; 42%), grade 2 (moderate; 53%), and grade 3 (severe; 5%) in the patients with positive test results. Among the 78 subjects with negative results for intakes at home, 92% had no symptoms, with the remaining 8% having mild symptoms but requiring no treatment. We could confirm later that all the patients could eat foods containing half of a chicken egg. CONCLUSION For the subjects with negative egg-juice OFC test results, eating egg products equivalent to half of an egg at home seemed to be relatively safe.
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Ohtani K, Sato S, Syukuya A, Asaumi T, Ogura K, Koike Y, Iikura K, Yanagida N, Imai T, Ebisawa M. Natural history of immediate-type hen's egg allergy in Japanese children. Allergol Int 2016; 65:153-157. [PMID: 26666473 DOI: 10.1016/j.alit.2015.10.005] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Revised: 10/09/2015] [Accepted: 10/14/2015] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Hen's egg (HE) allergy develops during infancy. We investigated tolerance acquisition in Japanese children allergic to HE aging <6 years. METHODS In this retrospective study, 226 children born in 2005 with a history of immediate-type HE allergy underwent an oral food challenge (OFC). Tolerance was defined as no reaction to an OFC with half of whole heated HE or accidental HE consumption at home. Participants were divided into three groups based on age at tolerance acquisition: group I (<3 years) (n = 66), group II (3-6 years) (n = 98), and group III (prolonged allergic groups) (n = 62). RESULTS Tolerance acquisition occurred in 30% (66/226) by 3 years of age, 59% (133/226) by 5 years of age, and 73% (164/226) at 6 years of age. At 3 years, incidences of allergy-related complications (bronchial asthma, p = 0.02; atopic dermatitis, p = 0.04) were higher in the group III than in the group I. Anaphylaxis to any food occurred more frequently in the group III than in the group I (p = 0.03); anaphylaxis to HE was more common in the group III (p = 0.04). Egg white (EW)- and ovomucoid (OM)-specific immunoglobulin E (IgE) levels were higher in the group III than in the group I (p < 0.05). CONCLUSIONS The group III experienced HE-related anaphylaxis and complications more frequently and exhibited sustained, high EW- and OM-specific IgE levels.
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Affiliation(s)
- Kiyotaka Ohtani
- Clinical Research Center for Allergy and Rheumatology, Sagamihara National Hospital, Kanagawa, Japan; Department of Pediatrics, Sagamihara Kyodo Hospital, Kanagawa, Japan
| | - Sakura Sato
- Clinical Research Center for Allergy and Rheumatology, Sagamihara National Hospital, Kanagawa, Japan
| | | | - Tomoyuki Asaumi
- Department of Pediatrics, Sagamihara National Hospital, Kanagawa, Japan
| | - Kiyotake Ogura
- Clinical Research Center for Allergy and Rheumatology, Sagamihara National Hospital, Kanagawa, Japan
| | - Yumi Koike
- Department of General Medicine, Nagano Children's Hospital, Nagano, Japan
| | - Katsuhito Iikura
- Department of Pediatrics, Sagamihara National Hospital, Kanagawa, Japan
| | - Noriyuki Yanagida
- Department of Pediatrics, Sagamihara National Hospital, Kanagawa, Japan
| | - Takanori Imai
- Clinical Research Center for Allergy and Rheumatology, Sagamihara National Hospital, Kanagawa, Japan; Department of Pediatrics, Showa University, Tokyo, Japan
| | - Motohiro Ebisawa
- Clinical Research Center for Allergy and Rheumatology, Sagamihara National Hospital, Kanagawa, Japan.
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Lee JB, Chen CY, Liu B, Mugge L, Angkasekwinai P, Facchinetti V, Dong C, Liu YJ, Rothenberg ME, Hogan SP, Finkelman FD, Wang YH. IL-25 and CD4(+) TH2 cells enhance type 2 innate lymphoid cell-derived IL-13 production, which promotes IgE-mediated experimental food allergy. J Allergy Clin Immunol 2016; 137:1216-1225.e5. [PMID: 26560039 PMCID: PMC4826796 DOI: 10.1016/j.jaci.2015.09.019] [Citation(s) in RCA: 105] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Revised: 09/10/2015] [Accepted: 09/15/2015] [Indexed: 10/22/2022]
Abstract
BACKGROUND Food-mediated allergic reactions have emerged as a major health problem. The underlying mechanisms that promote uncontrolled type 2 immune responses to dietary allergens in the gastrointestinal tract remain elusive. OBJECTIVE We investigated whether altering IL-25 signaling enhances or attenuates allergic responses to food allergens. METHODS Mice of an IL-25 transgenic mouse line (iIL-25Tg mice), which constitutively overexpress intestinal IL-25, and Il17rb(-/-) mice, in which Il17rb gene expression is disrupted, were sensitized and gavage fed with ovalbumin (OVA). We assessed symptomatic characteristics of experimental food allergy, including incidence of diarrhea, incidence of hypothermia, intestinal TH2 immune response, and serum OVA-specific IgE and mast cell protease 1 production. RESULTS Rapid induction of Il25 expression in the intestinal epithelium preceded onset of the anaphylactic response to ingested OVA antigen. iIL-25Tg mice were more prone and Il17rb(-/-) mice were more resistant to experimental food allergy. Resident intestinal type 2 innate lymphoid cells (ILC2s) were identified as the major producers of IL-5 and IL-13 in response to IL-25. Reconstituting irradiated wild-type mice with Rora(-/-) or Il17rb(-/-) bone marrow resulted in a deficiency or dysfunction of the ILC2 compartment, respectively, and resistance to experimental food allergy. Repeated intragastric antigen challenge induced a significant increase in numbers of CD4(+) TH2 cells, which enhance IL-25-stimulated IL-13 production by ILC2s ex vivo and in vivo. Finally, reconstituted IL-13-deficient ILC2s had reduced capability to promote allergic inflammation, resulting in increased resistance to experimental food allergy. CONCLUSION IL-25 and CD4(+) TH2 cells induced by ingested antigens enhance ILC2-derived IL-13 production, thereby promoting IgE-mediated experimental food allergy.
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Affiliation(s)
- Jee-Boong Lee
- Division of Allergy and Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Chun-Yu Chen
- Division of Allergy and Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Bo Liu
- Division of Allergy and Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Luke Mugge
- Division of Allergy and Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Pornpimon Angkasekwinai
- Department of Medical Technology, Faculty of Allied Health Sciences, Thammasat University, Bangkok, Thailand
| | - Valeria Facchinetti
- Department of Immunology, University of Texas and MD Anderson Cancer Center, Houston, Tex
| | - Chen Dong
- Department of Immunology, University of Texas and MD Anderson Cancer Center, Houston, Tex
| | | | - Marc E Rothenberg
- Division of Allergy and Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Simon P Hogan
- Division of Allergy and Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Fred D Finkelman
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Medicine, Cincinnati Veterans Affairs Medical Center, Cincinnati, Ohio; Division of Immunology, Allergy and Rheumatology, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Yui-Hsi Wang
- Division of Allergy and Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.
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Shimizu M, Imai T, Yamazaki S, Yagawa A, Miyazawa T, Nakamura T, Hojo N, Ishikawa R, Kamiya T, Itahashi K. [SAFETY OF INFLUENZA VACCINATION IN CHILDREN WITH SEVERE ALLERGY TO HEN'S EGGS: A PROSPECTIVE CASE SERIES STUDY]. Arerugi 2016; 65:128-133. [PMID: 27086959 DOI: 10.15036/arerugi.65.128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
BACKGROUND Influenza vaccination guidelines have recommended that pediatricians should consult with allergists in the case of for children with histories of anaphylaxis to hen's eggs. On the other hand, whether such children can be safely vaccinated is unclear. OBJECTIVE To evaluate the safety of influenza vaccination for children severely allergic to eggs. METHODS The study population consisted severe egg-allergic children that had never been immunized with influenza vaccine. The inclusion criteria of severe egg-allergic children included evidence of serum specific IgE antibodies to egg white or an ovomucoid level of class4 or more and complete elimination of dietary intake of eggs, or occurrence of Sampson Grade 3 to 5 anaphylactic reactions upon egg ingestion. Patients underwent skin prick tests, and received 0.1ml of influenza vaccine, followed in 30 minutes if no reaction with the remainder of an age-appropriate dose. We observed the subjects for 30 minutes afterwards, and they were observed by their patients during the subsequent 24 hours. RESULTS A total of 17 patients were enrolled. All patients received influenza vaccination without an allergic reaction. CONCLUSIONS Influenza vaccination is safe even in children with histories of severe egg allergy. influenza vaccination without an allergic reaction.
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Affiliation(s)
- Mayu Shimizu
- Department of Pediatrics, Showa University School of Medicine
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Arik Yilmaz E, Cavkaytar O, Buyuktiryaki B, Sekerel BE, Soyer O, Sackesen C. Factors associated with the course of egg allergy in children. Ann Allergy Asthma Immunol 2016; 115:434-438.e1. [PMID: 26505933 DOI: 10.1016/j.anai.2015.08.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Revised: 08/13/2015] [Accepted: 08/18/2015] [Indexed: 01/17/2023]
Abstract
BACKGROUND The risk factors that affect persistence of egg allergy are under investigation. OBJECTIVE To investigate the factors associated with the course of egg allergy and anaphylaxis in children. METHODS Children who had been diagnosed as having an IgE-mediated egg allergy and followed up until 6 years of age were enrolled. IgE-mediated egg allergy was diagnosed by a positive skin prick test result, specific IgE (sIgE) level of 0.35 kU/L or greater, and clear-cut history of egg-related symptoms or positive challenge test results. RESULTS A total of 203 (56%) of 363 egg allergic children were followed up until 6 years of age. Egg allergy resolved in 92 children (45%) at 2 years of age, 134 children (66%) at 4 years of age, and 145 children (71%) at 6 years of age. The resolution of egg allergy was associated with baseline egg sIgE level of 6.2 kU/L or less and the absence of anaphylaxis (hazard ratio, 0.32; 95% CI, 0.21-0.49; P < .001; and hazard ratio, 0.38; 95% CI, 0.21-0.69; P = .001, respectively). Baseline factors, including cut-off level of egg sIgE level greater than 6.2 kU/L, egg sIgE level, gastrointestinal symptoms after egg exposure, anaphylaxis with egg, and concomitant cow's milk allergy, were significantly associated with later resolution of egg allergy. The multivariate logistic regression determined that the natural logarithm for egg-white sIgE (odds ratio, 1.44; 95% CI, 1.09-1.91; P = .01) and the baseline gastrointestinal symptoms with egg (odds ratio, 6.86; 95% CI, 2.93-16.06; P < .001) were significantly related to a higher risk of anaphylaxis with egg. CONCLUSION Baseline egg white sIgE levels, baseline gastrointestinal system involvement, concomitant cow's milk allergy, and anaphylaxis with egg may predict a more severe course of egg allergy with late resolution. Moreover, egg white sIgE levels and gastrointestinal symptoms after egg exposure seem to increase the risk of anaphylaxis with egg.
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Affiliation(s)
- Ebru Arik Yilmaz
- Division of Pediatric Allergy, Hacettepe University School of Medicine, Ankara, Turkey
| | - Ozlem Cavkaytar
- Division of Pediatric Allergy, Hacettepe University School of Medicine, Ankara, Turkey
| | - Betul Buyuktiryaki
- Division of Pediatric Allergy, Hacettepe University School of Medicine, Ankara, Turkey
| | - Bulent E Sekerel
- Division of Pediatric Allergy, Hacettepe University School of Medicine, Ankara, Turkey
| | - Ozge Soyer
- Division of Pediatric Allergy, Hacettepe University School of Medicine, Ankara, Turkey
| | - Cansin Sackesen
- Division of Pediatric Allergy, Hacettepe University School of Medicine, Ankara, Turkey; Department of Pediatrics, Koc University School of Medicine, Istanbul, Turkey.
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Asserhøj LL, Mosbech H, Krøigaard M, Garvey LH. No evidence for contraindications to the use of propofol in adults allergic to egg, soy or peanut†. Br J Anaesth 2016; 116:77-82. [PMID: 26675952 DOI: 10.1093/bja/aev360] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Propofol is thought to be a potential cause of allergic reactions in patients allergic to egg, soy or peanut, since current formulations contain an emulsion that includes egg lecithin and soybean oil. However, other than six case reports lacking in confirmatory evidence of an allergic reaction, there is no evidence linking the two types of allergies. The aim of this study was to examine the frequency of propofol allergy and to investigate if patients with specific immunoglobulin E (IgE) to egg, soy or peanut tolerated propofol. METHODS Study A examined the frequency of propofol allergy in 273 patients systematically investigated for suspected perioperative allergic reactions. Of these, 153 had been exposed to propofol and underwent skin tests and intravenous provocation. Study B retrospectively investigated propofol exposure and tolerance in 520 adult patients with a positive specific IgE to egg, soy or peanut. RESULTS Four of the 153 propofol-exposed patients (2.6%) investigated in study A were diagnosed with propofol allergy. Of these, three tested positive only on intravenous provocation. None of the four had allergic symptoms when eating egg, soy or peanut and none had detectable levels of specific IgE to egg or soy in their serum. In study B we found no signs of allergic reactions towards propofol in 171 retrieved anaesthetic charts from 99 patients with specific IgE to egg, soy or peanut. CONCLUSION No connection between allergy to propofol and allergy to egg, soy or peanut was found. The present practice of choosing alternatives to propofol in patients with this kind of food allergy is not evidence based and should be reconsidered.
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Affiliation(s)
- L L Asserhøj
- Danish Anaesthesia Allergy Centre (DAAC), Allergy Clinic UA-816, Copenhagen University Hospital, Gentofte, Kildegårdsvej 28, 2900 Hellerup, Denmark
| | - H Mosbech
- Danish Anaesthesia Allergy Centre (DAAC), Allergy Clinic UA-816, Copenhagen University Hospital, Gentofte, Kildegårdsvej 28, 2900 Hellerup, Denmark
| | - M Krøigaard
- Danish Anaesthesia Allergy Centre (DAAC), Allergy Clinic UA-816, Copenhagen University Hospital, Gentofte, Kildegårdsvej 28, 2900 Hellerup, Denmark
| | - L H Garvey
- Danish Anaesthesia Allergy Centre (DAAC), Allergy Clinic UA-816, Copenhagen University Hospital, Gentofte, Kildegårdsvej 28, 2900 Hellerup, Denmark
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Bravin K, Luyt D. Home-Based Oral Immunotherapy With a Baked Egg Protocol. J Investig Allergol Clin Immunol 2016; 26:61-63. [PMID: 27012022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023] Open
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Gamboa PM, Garcia-Lirio E, Gonzalez C, Gonzalez A, Sanz María L. Is the Quantification of Antigen-Specific Basophil Activation a Useful Tool for Monitoring Oral Tolerance Induction in Children With Egg Allergy? J Investig Allergol Clin Immunol 2016; 26:25-30. [PMID: 27012013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023] Open
Abstract
OBJECTIVES To assess modifications in baseline specific IgE- and anti-IgE- and antigen-specific-mediated basophil activation in egg-allergic children. The values were compared before and after the children completed specific oral tolerance induction (SOTI) with egg. PATIENTS AND METHODS We studied 28 egg-allergic children who completed SOTI with egg. The basophil activation test and specific IgE determinations with egg white, ovalbumin, and ovomucoid were performed in all 28 children. RESULTS A decrease in antigen-specific activation with egg white, ovalbumin, and ovomucoid was observed only at the 2 lowest concentrations used (5 and 0.05 ng/mL). Baseline activation was higher in patients with multiple food allergies and in those who developed anaphylaxis during SOTI; this activation decreased in both groups after completion of SOTI. A significant decrease was also observed in specific IgE values for egg white, ovalbumin, and ovomucoid after tolerance induction. CONCLUSIONS Food tolerance induction is a specific process for each food that can be mediated by immunologic changes such as a decrease in specific IgE values and in specific and spontaneous basophil activation.
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Zeyrek D, Koruk I, Kara B, Demir C, Cakmak A. Prevalence of IgE mediated cow's milk and egg allergy in children under 2 years of age in Sanliurfa, Turkey: the city that isn't almost allergic to cow's milk. Minerva Pediatr 2015; 67:465-472. [PMID: 24938883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
AIM Food allergy is a common problem in children and adults. The aim of this study was to determine the frequency of cow's milk and egg allergy based on skin prick test and oral food challenge results METHODS We recruited 614 children aged 1 month-2 years in from different areas of Sanliurfa. An interview was conducted with each parents and family demographic, and prenatal-antenatal-postnatal information was recorded, then skin prick test was applied to the children for egg white, egg yolk and cow's milk. Cases that are required, sIgE levels for cow's milk, egg white and egg yolk were measured and food challenge tests were applied. RESULTS Cow's milk and egg allergy was determined in 1 case (0.16%) and 8 cases (1.30%) respectively from the results of the tests applied. Six cases (0.97%) were accepted as sensitive to egg white and egg yolk. Within the factors which were questioned, (only the egg allergy evaluation was made without the cow's milk allergy case) of those with parental consanguinity was determined at a statistically significantly high level (OR=5.8, 95% CI: 1.2-27.2, P=0.01). CONCLUSION The prevalence of cow's milk allergy in Sanliurfa is the lowest reported prevalence rate to date in children under 2 years of age. When infants develop a food allergy, this takes the form of egg allergy. Within the several factors evaluated to explain this situation, a significant relationship was determined only with parental consanguinity. However, as reported above, to date there is no genetic or epidemiological study to explain this situation.
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Affiliation(s)
- D Zeyrek
- Division of Allergy and Immunology, Department of Pediatrics, Harran University School of Medicine Sanliurfa, Turkey -
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Winberg A, West CE, Strinnholm Å, Nordström L, Hedman L, Rönmark E. Assessment of Allergy to Milk, Egg, Cod, and Wheat in Swedish Schoolchildren: A Population Based Cohort Study. PLoS One 2015; 10:e0131804. [PMID: 26134827 PMCID: PMC4489866 DOI: 10.1371/journal.pone.0131804] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 06/07/2015] [Indexed: 11/18/2022] Open
Abstract
Objectives Knowledge about the prevalence of allergies to foods in childhood and adolescence is incomplete. The purpose of this study was to investigate the prevalence of allergies to milk, egg, cod, and wheat using reported data, clinical examinations, and double-blind placebo-controlled food challenges, and to describe the phenotypes of reported food hypersensitivity in a cohort of Swedish schoolchildren. Methods In a population-based cohort of 12-year-old children, the parents of 2612 (96% of invited) completed a questionnaire. Specific IgE antibodies to foods were analyzed in a random sample (n=695). Children reporting complete avoidance of milk, egg, cod, or wheat due to perceived hypersensitivity and without physician-diagnosed celiac disease were invited to undergo clinical examination that included specific IgE testing, a celiac screening test, and categorization into phenotypes of food hypersensitivity according to preset criteria. Children with possible food allergy were further evaluated with double-blind challenges. Results In this cohort, the prevalence of reported food allergy to milk, egg, cod, or wheat was 4.8%. Food allergy was diagnosed in 1.4% of the children after clinical evaluation and in 0.6% following double-blind placebo-controlled food challenge. After clinical examination, children who completely avoided one or more essential foods due to perceived food hypersensitivity were categorized with the following phenotypes: allergy (29%), outgrown allergy (19%), lactose intolerance (40%), and unclear (12%). Conclusions There was a high discrepancy in the prevalence of allergy to milk, egg, cod and wheat as assessed by reported data, clinical evaluation, and double-blind food challenges. Food hypersensitivity phenotyping according to preset criteria was helpful for identifying children with food allergy.
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Affiliation(s)
- Anna Winberg
- Department of Clinical Sciences, Pediatrics, Umeå University, Umeå, Sweden
| | - Christina E West
- Department of Clinical Sciences, Pediatrics, Umeå University, Umeå, Sweden
| | - Åsa Strinnholm
- Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine, the OLIN unit, Umeå University, Umeå, Sweden
| | - Lisbeth Nordström
- Department of Clinical Sciences, Pediatrics, Umeå University, Umeå, Sweden
| | - Linnea Hedman
- Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine, the OLIN unit, Umeå University, Umeå, Sweden
| | - Eva Rönmark
- Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine, the OLIN unit, Umeå University, Umeå, Sweden
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Dhanapala P, De Silva C, Doran T, Suphioglu C. Cracking the egg: An insight into egg hypersensitivity. Mol Immunol 2015; 66:375-83. [PMID: 25965316 DOI: 10.1016/j.molimm.2015.04.016] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Revised: 04/22/2015] [Accepted: 04/22/2015] [Indexed: 11/18/2022]
Abstract
Hypersensitivity to the chicken egg is a widespread disorder mainly affecting 1-2% of children worldwide. It is the second most common food allergy in children, next to cow's milk allergy. Egg allergy is mainly caused by hypersensitivity to four allergens found in the egg white; ovomucoid, ovalbumin, ovotransferrin and lysozyme. However, some research suggests the involvement of allergens exclusively found in the egg yolk such as chicken serum albumin and YGP42, which may play a crucial role in the overall reaction. In egg allergic individuals, these allergens cause conditions such as itching, atopic dermatitis, bronchial asthma, vomiting, rhinitis, conjunctivitis, laryngeal oedema and chronic urticaria, and anaphylaxis. Currently there is no permanent cure for egg allergy. Upon positive diagnosis for egg allergy, strict dietary avoidance of eggs and products containing traces of eggs is the most effective way of avoiding future hypersensitivity reactions. However, it is difficult to fully avoid eggs since they are found in a range of processed food products. An understanding of the mechanisms of allergic reactions, egg allergens and their prevalence, egg allergy diagnosis and current treatment strategies are important for future studies. This review addresses these topics and discusses both egg white and egg yolk allergy as a whole.
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Affiliation(s)
- Pathum Dhanapala
- NeuroAllergy Research Laboratory (NARL), School of Life and Environmental Sciences, Faculty of Science, Engineering and Built Environment, Deakin University, 75 Pigdons Road, Geelong 3216, Australia; Australian Animal Health Laboratory (AAHL), Commonwealth Scientific and Industrial Research Organisation (CSIRO), 5 Portarlington Road, East Geelong 3219, Victoria, Australia; Poultry CRC, PO Box U242, University of New England, Armidale, NSW 2351, Australia
| | - Chamika De Silva
- NeuroAllergy Research Laboratory (NARL), School of Life and Environmental Sciences, Faculty of Science, Engineering and Built Environment, Deakin University, 75 Pigdons Road, Geelong 3216, Australia
| | - Tim Doran
- Australian Animal Health Laboratory (AAHL), Commonwealth Scientific and Industrial Research Organisation (CSIRO), 5 Portarlington Road, East Geelong 3219, Victoria, Australia; Poultry CRC, PO Box U242, University of New England, Armidale, NSW 2351, Australia
| | - Cenk Suphioglu
- NeuroAllergy Research Laboratory (NARL), School of Life and Environmental Sciences, Faculty of Science, Engineering and Built Environment, Deakin University, 75 Pigdons Road, Geelong 3216, Australia; Poultry CRC, PO Box U242, University of New England, Armidale, NSW 2351, Australia.
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Diesner SC, Schultz C, Ackaert C, Oostingh GJ, Ondracek A, Stremnitzer C, Singer J, Heiden D, Roth-Walter F, Fazekas J, Assmann VE, Jensen-Jarolim E, Stutz H, Duschl A, Untersmayr E. Nitration of β-Lactoglobulin but Not of Ovomucoid Enhances Anaphylactic Responses in Food Allergic Mice. PLoS One 2015; 10:e0126279. [PMID: 25955653 PMCID: PMC4425501 DOI: 10.1371/journal.pone.0126279] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Accepted: 03/31/2015] [Indexed: 12/31/2022] Open
Abstract
Background We revealed in previous studies that nitration of food proteins reduces the risk of de novo sensitization in a murine food allergy model. In contrast, in situations with preformed specific IgE antibodies, in vitro experiments suggested an increased capacity of effector cell activation by nitrated food proteins. Objective The aim of this study was to investigate the influence of protein nitration on the effector phase of food allergy. Design BALB/c mice were immunized intraperitoneally (i.p.) with the milk allergen β-lactoglobulin (BLG) or the egg allergen ovomucoid (OVM), followed by intragastric (i.g.) gavages to induce a strong local inflammatory response and allergen-specific antibodies. Subsequently, naïve and allergic mice were intravenously (i.v.) challenged with untreated, sham-nitrated or nitrated BLG or OVM. Anaphylaxis was monitored by measuring core body temperature and determination of mouse mast cell protease-1 (mMCP-1) levels in blood. Results A significant drop of body temperature accompanied with significantly elevated concentrations of the anaphylaxis marker mMCP-1 were only observed in BLG allergic animals challenged with nitrated BLG and not in OVM allergic mice challenged with nitrated OVM. SDS-PAGE and circular dichroism analysis of the differentially modified allergens revealed an effect of nitration on the secondary protein structure exclusively for BLG together with enhanced protein aggregation. Conclusion Our data suggest that nitration affects differently the food allergens BLG and OVM. In the case of BLG, structural changes favored dimerization possibly explaining the increased anaphylactic reactivity in BLG allergic animals.
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Affiliation(s)
- Susanne C. Diesner
- Department of Pathophysiology and Allergy Research, Center of Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
- Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Vienna, Austria
| | - Cornelia Schultz
- Department of Pathophysiology and Allergy Research, Center of Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Chloé Ackaert
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Gertie J. Oostingh
- Biomedical Sciences, Salzburg University of Applied Sciences, Puch/Salzburg, Austria
| | - Anna Ondracek
- Department of Pathophysiology and Allergy Research, Center of Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Caroline Stremnitzer
- Department of Pathophysiology and Allergy Research, Center of Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Josef Singer
- Department of Pathophysiology and Allergy Research, Center of Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Denise Heiden
- Department of Pathophysiology and Allergy Research, Center of Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Franziska Roth-Walter
- Department of Pathophysiology and Allergy Research, Center of Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
- Comparative Medicine, Messerli Research Institute of the University of Veterinary Medicine Vienna, Medical University Vienna and University Vienna, Vienna, Austria
| | - Judit Fazekas
- Department of Pathophysiology and Allergy Research, Center of Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Vera E. Assmann
- Department of Pathophysiology and Allergy Research, Center of Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Erika Jensen-Jarolim
- Department of Pathophysiology and Allergy Research, Center of Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
- Comparative Medicine, Messerli Research Institute of the University of Veterinary Medicine Vienna, Medical University Vienna and University Vienna, Vienna, Austria
| | - Hanno Stutz
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Albert Duschl
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Eva Untersmayr
- Department of Pathophysiology and Allergy Research, Center of Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
- * E-mail:
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Du Toit G, Roberts G, Sayre PH, Bahnson HT, Radulovic S, Santos AF, Brough HA, Phippard D, Basting M, Feeney M, Turcanu V, Sever ML, Gomez Lorenzo M, Plaut M, Lack G. Randomized trial of peanut consumption in infants at risk for peanut allergy. N Engl J Med 2015; 372:803-13. [PMID: 25705822 PMCID: PMC4416404 DOI: 10.1056/nejmoa1414850] [Citation(s) in RCA: 1291] [Impact Index Per Article: 143.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
BACKGROUND The prevalence of peanut allergy among children in Western countries has doubled in the past 10 years, and peanut allergy is becoming apparent in Africa and Asia. We evaluated strategies of peanut consumption and avoidance to determine which strategy is most effective in preventing the development of peanut allergy in infants at high risk for the allergy. METHODS We randomly assigned 640 infants with severe eczema, egg allergy, or both to consume or avoid peanuts until 60 months of age. Participants, who were at least 4 months but younger than 11 months of age at randomization, were assigned to separate study cohorts on the basis of preexisting sensitivity to peanut extract, which was determined with the use of a skin-prick test--one consisting of participants with no measurable wheal after testing and the other consisting of those with a wheal measuring 1 to 4 mm in diameter. The primary outcome, which was assessed independently in each cohort, was the proportion of participants with peanut allergy at 60 months of age. RESULTS Among the 530 infants in the intention-to-treat population who initially had negative results on the skin-prick test, the prevalence of peanut allergy at 60 months of age was 13.7% in the avoidance group and 1.9% in the consumption group (P<0.001). Among the 98 participants in the intention-to-treat population who initially had positive test results, the prevalence of peanut allergy was 35.3% in the avoidance group and 10.6% in the consumption group (P=0.004). There was no significant between-group difference in the incidence of serious adverse events. Increases in levels of peanut-specific IgG4 antibody occurred predominantly in the consumption group; a greater percentage of participants in the avoidance group had elevated titers of peanut-specific IgE antibody. A larger wheal on the skin-prick test and a lower ratio of peanut-specific IgG4:IgE were associated with peanut allergy. CONCLUSIONS The early introduction of peanuts significantly decreased the frequency of the development of peanut allergy among children at high risk for this allergy and modulated immune responses to peanuts. (Funded by the National Institute of Allergy and Infectious Diseases and others; ClinicalTrials.gov number, NCT00329784.).
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Affiliation(s)
- George Du Toit
- From the Department of Pediatric Allergy, Division of Asthma, Allergy and Lung Biology, King's College London and Guy's and St. Thomas' National Health Service Foundation Trust, London (G.D.T., S.R., A.F.S., H.A.B., M.B., M.F., V.T., G.L.), and the University of Southampton and National Institute for Health Research Respiratory Biomedical Research Unit, Southampton and David Hide Centre, Newport, Isle of Wight (G.R.) - both in the United Kingdom; the Division of Hematology-Oncology, Department of Medicine (P.H.S.), and the Immune Tolerance Network (D.P.), University of California, San Francisco, San Francisco; Rho Federal Systems Division, Chapel Hill, NC (H.T.B., M.L.S.); and the National Institute of Allergy and Infectious Diseases, Bethesda, MD (M.G.L., M.P.)
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