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Tusé D, McNulty M, McDonald KA, Buchman LW. A review and outlook on expression of animal proteins in plants. FRONTIERS IN PLANT SCIENCE 2024; 15:1426239. [PMID: 39239203 PMCID: PMC11374769 DOI: 10.3389/fpls.2024.1426239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Accepted: 06/25/2024] [Indexed: 09/07/2024]
Abstract
This review delves into the multifaceted technologies, benefits and considerations surrounding the expression of animal proteins in plants, emphasizing its potential role in advancing global nutrition, enhancing sustainability, while being mindful of the safety considerations. As the world's population continues to grow and is projected to reach 9 billion people by 2050, there is a growing need for alternative protein sources that can meet nutritional demands while minimizing environmental impact. Plant expression of animal proteins is a cutting-edge biotechnology approach that allows crops to produce proteins traditionally derived from animals, offering a sustainable and resource-efficient manner of producing these proteins that diversifies protein production and increases food security. In the United States, it will be important for there to be clear guidance in order for these technologies to reach consumers. As consumer demand for sustainable and alternative food sources rise, biotechnologies can offer economic opportunities, making this emerging technology a key player in the market landscape.
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Affiliation(s)
- Daniel Tusé
- DT/Consulting Group, Sacramento, CA, United States
| | - Matthew McNulty
- Center for Cellular Agriculture, Tufts University, Medford, MA, United States
| | - Karen A McDonald
- Department of Chemical Engineering and Global Healthshare Initiative, University of California, Davis, Davis, CA, United States
| | - Leah W Buchman
- Biotechniology Innovation Organization, Agriculture and Environment, Washington, DC, United States
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Zeng J, Ma F, Zhai L, Du C, Zhao J, Li Z, Wang J. Recent advance in sesame allergens: Influence of food processing and their detection methods. Food Chem 2024; 448:139058. [PMID: 38531299 DOI: 10.1016/j.foodchem.2024.139058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 03/14/2024] [Accepted: 03/15/2024] [Indexed: 03/28/2024]
Abstract
Sesame (Sesamum indicum L.) is a valuable oilseed crop with numerous nutritional benefits containing a diverse range of bioactive compounds. However, sesame is also considered an allergenic food that triggers various mild to severe adverse reactions (e.g., anaphylaxis). Strict dietary avoidance of sesame components is the best option to protect the sensitized consumers. Sesame or sesame-derived foods are always consumed after certain food processing operations, which would cause a considerable impact on the structure of sesame proteins, changing their sensitization capacity and detectability. In the review, the molecular structure properties, and immunological characteristics of the sesame allergens were described. Meanwhile, the influence of food processing techniques on sesame proteins and the relevant detection techniques used for the sesame allergens quantification are also emphasized critically. Hopefully, this review could provide valuable insight into the development and management for the new "Big Eight" sesame allergen in food industry.
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Affiliation(s)
- Jianhua Zeng
- School of Food Engineering, Anhui Provincial Key Laboratory of Functional Agriculture and Functional Foods, Associated Discipline Key Laboratory of Whole Grain Nutrition and High-Value Utilization, Anhui Science and Technology University, No.9, Donghua Road, Fengyang, Anhui Province 233100, China; College of Food Science and Engineering, Ocean University of China, No.5, Yushan Road, Qingdao, Shandong Province 266003, China
| | - Feifei Ma
- School of Food Engineering, Anhui Provincial Key Laboratory of Functional Agriculture and Functional Foods, Associated Discipline Key Laboratory of Whole Grain Nutrition and High-Value Utilization, Anhui Science and Technology University, No.9, Donghua Road, Fengyang, Anhui Province 233100, China; Nutrition and Bromatology Group, Department of Analytical and Food Chemistry, Faculty of Sciences, University of Vigo, Ourense 32004, Spain
| | - Ligong Zhai
- School of Food Engineering, Anhui Provincial Key Laboratory of Functional Agriculture and Functional Foods, Associated Discipline Key Laboratory of Whole Grain Nutrition and High-Value Utilization, Anhui Science and Technology University, No.9, Donghua Road, Fengyang, Anhui Province 233100, China
| | - Chuanlai Du
- School of Food Engineering, Anhui Provincial Key Laboratory of Functional Agriculture and Functional Foods, Associated Discipline Key Laboratory of Whole Grain Nutrition and High-Value Utilization, Anhui Science and Technology University, No.9, Donghua Road, Fengyang, Anhui Province 233100, China
| | - Jinlong Zhao
- School of Food Engineering, Anhui Provincial Key Laboratory of Functional Agriculture and Functional Foods, Associated Discipline Key Laboratory of Whole Grain Nutrition and High-Value Utilization, Anhui Science and Technology University, No.9, Donghua Road, Fengyang, Anhui Province 233100, China.
| | - Zhenxing Li
- College of Food Science and Engineering, Ocean University of China, No.5, Yushan Road, Qingdao, Shandong Province 266003, China
| | - Jin Wang
- Key Laboratory of Environmental Medicine and Engineering, Ministry of Education, and Department of Nutrition and Food Hygiene, School of Public Health, Southeast University, No. 87 Dingjiaqiao Rd., Nanjing, Jiangsu Province 210009, China
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Lu Y, Zhang Y, Wang S. From Palm to Plate: Unveiling the Potential of Coconut as a Plant-Based Food Alternative. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:15058-15076. [PMID: 38920018 DOI: 10.1021/acs.jafc.3c09838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
This review investigates coconut as a sustainable and nutrient-rich plant-based alternative to traditional animal-based food sources. We have explored the nutritional profile, culinary versatility, particularly focusing on the use of coconut meat, milk, cream, and oil in diverse dietary contexts when consumed in balance. Comparative analysis with animal-derived products reveals the high content of medium-chain triglycerides (MCTs), essential vitamins, and minerals in coconut, contrasted with its lower protein content. Researchers have underscored the environmental sustainability of coconut, advocating for its role in eco-friendly food production chains. We have also addressed challenges like potential allergies, nutritional balance, sensory attributes, and consumer motivations for coconut-based products, in terms of understanding the market dynamics. In conclusion, this review positions coconut as a promising candidate within sustainable diet frameworks, advocating for further research to augment its nutritional value, sensory characteristics, and product stability, thereby facilitating its integration into health-conscious and eco-centric dietary practices.
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Affiliation(s)
- Yingshuang Lu
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
| | - Yan Zhang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
| | - Shuo Wang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
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Warren C, Gupta R, Seetasith A, Schuldt R, Wang R, Iqbal A, Gupta S, Casale TB. The clinical burden of food allergies: Insights from the Food Allergy Research & Education (FARE) Patient Registry. World Allergy Organ J 2024; 17:100889. [PMID: 38523669 PMCID: PMC10959723 DOI: 10.1016/j.waojou.2024.100889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 02/05/2024] [Accepted: 02/28/2024] [Indexed: 03/26/2024] Open
Abstract
Background Food allergies are serious and potentially life-threatening, and often place a large burden on patients and their caregivers, including impacts on quality of life. Objective To assess the real-world patient burden of food allergies, using self-reported data available from the Food Allergy Research & Education (FARE) Patient Registry (NCT04653324). Methods The FARE Patient Registry is voluntary and captures real-world experiences of adults and pediatric patients in the United States, and their caregivers, through a series of surveys assessing patient health and experiences with food allergies. Self-reported data were descriptively analyzed. Results The FARE study cohort included 5587 patients with food allergies; 82% had multiple food allergies and 62% were aged <18 years. About half of the patients were first diagnosed by an allergist/immunologist (53%), most commonly with a skin prick test (71%) or a serum immunoglobulin E test (62%). This analysis found that food allergies (most commonly peanut [66%], tree nuts [61%], egg [43%], and milk [37%]) impart a large clinical burden on patients, many of whom experience food-related allergic reactions and comorbidities. Many patients experienced >1 food-related allergic reaction per year (42%), with 46% experiencing food-induced anaphylaxis. Half of all food-related allergic reactions occurred at home. Accidental exposures to food allergens were experienced by 77% of patients. The most common allergic comorbidities reported by patients with food allergies were atopic dermatitis (48%), asthma (46%), and allergic rhinitis (39%). The clinical burden of food allergies were found to be greater in patients with multiple food allergies, and different for adults versus pediatric patients. Conclusion This is the first study to assess patient experience and disease burden information from patients contributing to the FARE Patient Registry, thus providing a unique insight into the lives of patients in the United States with food allergies. These insights may assist clinicians and other public health stakeholders in the management of patients with food allergies.
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Affiliation(s)
| | | | | | | | | | - Ahmar Iqbal
- Genentech, Inc., South San Francisco, CA, USA
| | | | - Thomas B. Casale
- Division of Allergy and Immunology, University of South Florida, Tampa, FL, USA
- Food Allergy Research & Education (FARE), McLean, VA, USA
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Spolidoro GCI, Lisik D, Nyassi S, Ioannidou A, Ali MM, Amera YT, Rovner G, Khaleva E, Venter C, van Ree R, Worm M, Vlieg-Boerstra B, Sheikh A, Muraro A, Roberts G, Nwaru BI. Prevalence of tree nut allergy in Europe: A systematic review and meta-analysis. Allergy 2024; 79:302-323. [PMID: 37792850 DOI: 10.1111/all.15905] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 08/31/2023] [Accepted: 09/18/2023] [Indexed: 10/06/2023]
Abstract
In 2014, the European Academy of Allergy and Clinical Immunology (EAACI) published the first systematic review that summarized the prevalence of food allergy (FA) and food sensitization in Europe for studies published 2000-2012. However, only summary estimates for tree nut allergy (TNA) were feasible in that work. In the current update of that systematic review, we summarized the prevalence of tree nut allergy/sensitization to individual tree nuts. Six databases were searched for relevant papers published 2012-2021 and 17 eligible studies were added to the 15 studies already identified between 2000 and 2012, giving a total of 32 studies. Of the investigated tree nuts, meta-analysis was possible for hazelnut, walnut, almond, and in few cases, for cashew, and Brazil nut. The lifetime self-reported prevalence was 0.8% (95% CI 0.5-1.1) for hazelnut and 0.4% (0.2-0.9) for walnut. The point self-reported prevalence was 4.0% (2.9-5.2) for hazelnut, 3.4% (2.0-4.9) for Brazil nut, 2.0% (1.1-2.9) for almond, and 1.8% (1.1-2.5) for walnut. Point prevalence of food challenge-confirmed TNA was 0.04% (0.0-0.1) for hazelnut and 0.02% (0.01-0.1) for walnut. Due to paucity of data, we could not identify any meaningful and consistent differences across age groups and European regions.
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Affiliation(s)
- Giulia C I Spolidoro
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Daniil Lisik
- Krefting Research Centre, University of Gothenburg, Gothenburg, Sweden
| | - Sungkutu Nyassi
- Krefting Research Centre, University of Gothenburg, Gothenburg, Sweden
| | - Athina Ioannidou
- Krefting Research Centre, University of Gothenburg, Gothenburg, Sweden
| | - Mohamed Mustafa Ali
- School of Public Health and Community Medicine, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Yohannes Tesfaye Amera
- School of Public Health and Community Medicine, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Graciela Rovner
- ACT Institutet Sweden, Vejbystrand, Sweden
- Division of Physiotherapy, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden
| | | | - Carina Venter
- Section of Allergy & Immunology, School of Medicine, University of Colorado Denver, Children's Hospital Colorado, Aurora, Colorado, USA
| | - Ronald van Ree
- Department of Experimental Immunology and Department of Otorhinolaryngology, Amsterdam University Medical Centers, Amsterdam, The Netherlands
| | - Margitta Worm
- Division of Allergy and Immunology, Department of Dermatology, Allergy and Venerology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Berber Vlieg-Boerstra
- Department of Pediatrics, OLVG Hospital, Amsterdam, The Netherlands
- Department of Pediatrics, Rijnstate Hospital, Arnhem, The Netherlands
| | - Aziz Sheikh
- Usher Institute, University of Edinburgh, Edinburgh, UK
| | - Antonella Muraro
- Department of Mother and Child Health, The Referral Centre for Food Allergy Diagnosis and Treatment Veneto Region, University of Padua, Padua, Italy
| | - Graham Roberts
- Faculty of Medicine, University of Southampton, Southampton, UK
- David Hide Asthma and Allergy Centre, St Mary's Hospital, Isle of Wight, UK
| | - Bright I Nwaru
- Krefting Research Centre, University of Gothenburg, Gothenburg, Sweden
- Wallenberg Centre for Molecular and Translational Medicine, University of Gothenburg, Gothenburg, Sweden
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Berlic M, Battelino T, Korošec M. Can Kindergarten Meals Improve the Daily Intake of Vegetables, Whole Grains, and Nuts among Preschool Children? A Randomized Controlled Evaluation. Nutrients 2023; 15:4088. [PMID: 37764872 PMCID: PMC10536440 DOI: 10.3390/nu15184088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 09/13/2023] [Accepted: 09/20/2023] [Indexed: 09/29/2023] Open
Abstract
Surveys have indicated that preschool children do not consume adequate amounts of vegetables, fruits, whole grains, and nuts. This cross-sectional intervention study aimed to investigate whether a meticulously crafted meal plan for children of kindergarten age (5-6 years) could effectively enhance their daily intake of nutritious foods. Ninety-four healthy children from six kindergartens were enrolled in the study and were randomly assigned to a prototype group (PG) and a control group (CG). The PG kindergartens (n = 4) received a prototype 5-day meal plan that included regulated portions of vegetables, fruits, whole grains, and nuts adhering to dietary guidelines. Conversely, the CG kindergartens (n = 2) adhered to their standard meal plan. Participants maintained their usual eating habits outside of kindergarten and during weekends. Using the dietary assessment tool Open Platform for Clinical Nutrition (OPEN), combined with a 7-day dietary record of food consumed inside and outside the kindergarten, the average daily intake of specific food groups was assessed and compared with the Dietary Guidelines for Children. A total of 57 participants completed the study, 40 from the PG and 17 from the CG. Among the PG participants, the average daily intake of vegetables, whole grains, and nuts compared with the guideline recommendations was significantly higher than in the CG. Notably, only meals consumed within the kindergarten setting significantly improved the overall intake, with the outside intake having no significant effect. This study underscores the vital role of a well-designed and precisely executed meal plan in kindergartens in improving children's intake of healthy foods. The findings could help drive positive changes in child nutrition within educational environments.
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Affiliation(s)
- Maja Berlic
- Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva ulica 101, 1000 Ljubljana, Slovenia
- Preschool Galjevica, Galjevica 35, 1000 Ljubljana, Slovenia
| | - Tadej Battelino
- Division of Paediatrics, University Medical Centre Ljubljana, Bohoričeva ulica 20, 1000 Ljubljana, Slovenia
- Faculty of Medicine, University of Ljubljana, Vrazov trg 2, 1000 Ljubljana, Slovenia
| | - Mojca Korošec
- Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva ulica 101, 1000 Ljubljana, Slovenia
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Xiao C, Ross G, Nielen MWF, Eriksson J, Salentijn GI, Mak WC. A portable smartphone-based imaging surface plasmon resonance biosensor for allergen detection in plant-based milks. Talanta 2023; 257:124366. [PMID: 36863294 DOI: 10.1016/j.talanta.2023.124366] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 11/23/2022] [Accepted: 02/13/2023] [Indexed: 02/22/2023]
Abstract
Food allergies are hypersensitivity immune responses triggered by (traces of) allergenic compounds in foods and drinks. The recent trend towards plant-based and lactose-free diets has driven an increased consumption of plant-based milks (PBMs) with the risk of cross-contamination of various allergenic plant-based proteins during the food manufacturing process. Conventional allergen screening is usually performed in the laboratory, but portable biosensors for on-site screening of food allergens at the production site could improve quality control and food safety. Here, we developed a portable smartphone imaging surface plasmon resonance (iSPR) biosensor composed of a 3D-printed microfluidic SPR chip for the detection of total hazelnut protein (THP) in commercial PBMs and compared its instrumentation and analytical performance with a conventional benchtop SPR. The smartphone iSPR shows similar characteristic sensorgrams compared with the benchtop SPR and enables the detection of trace levels of THP in spiked PBMs with the lowest tested concentration of 0.625 μg/mL THP. The smartphone iSPR achieved LoDs of 0.53, 0.16, 0.14, 0.06, and 0.04 μg/mL THP in 10x-diluted soy, oat, rice, coconut, and almond PBMs, respectively, with good correlation with the conventional benchtop SPR system (R2 0.950-0.991). The portability and miniaturized characteristics of the smartphone iSPR biosensor platform make it promising for the future on-site detection of food allergens by food producers.
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Affiliation(s)
- Chi Xiao
- Division of Sensor and Actuator Systems, IFM - Linköping University, S58183, Linköping, Sweden
| | - Georgina Ross
- Wageningen Food Safety Research (WFSR), Wageningen University & Research, P.O. Box 230, 6700, AE, Wageningen, the Netherlands; Laboratory of Organic Chemistry, Wageningen University, Helix Building 124, Stippeneng 4, 6708 WE, Wageningen, the Netherlands
| | - Michel W F Nielen
- Wageningen Food Safety Research (WFSR), Wageningen University & Research, P.O. Box 230, 6700, AE, Wageningen, the Netherlands; Laboratory of Organic Chemistry, Wageningen University, Helix Building 124, Stippeneng 4, 6708 WE, Wageningen, the Netherlands
| | - Jens Eriksson
- Division of Sensor and Actuator Systems, IFM - Linköping University, S58183, Linköping, Sweden
| | - Gert Ij Salentijn
- Wageningen Food Safety Research (WFSR), Wageningen University & Research, P.O. Box 230, 6700, AE, Wageningen, the Netherlands; Laboratory of Organic Chemistry, Wageningen University, Helix Building 124, Stippeneng 4, 6708 WE, Wageningen, the Netherlands.
| | - Wing Cheung Mak
- Division of Sensor and Actuator Systems, IFM - Linköping University, S58183, Linköping, Sweden; Department of Biomedical Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong, China.
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Pasioti M, Savva M, Lakoumentas J, Kompoti E, Makris M, Xepapadaki P, Papadopoulos NG. Impact of Presumed Tree Nut and Peanut Allergy on Quality of Life at Different Ages. J Clin Med 2023; 12:jcm12103472. [PMID: 37240577 DOI: 10.3390/jcm12103472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 05/05/2023] [Accepted: 05/06/2023] [Indexed: 05/28/2023] Open
Abstract
Tree nut and/or peanut allergy impairs patients' quality of life, but data on the impact of age and the type of nut or peanut on the quality of life are lacking. To evaluate the impact at different ages, age-appropriate survey questionnaires accompanied by FAQLQ and FAIM were distributed to patients with suspected tree nut and/or peanut allergy who presented at the allergy departments of three hospitals in Athens. Out of 200 questionnaires distributed, 106 met the inclusion criteria (46 children, 26 teenagers, 34 adults). The median score of each age group for FAQLQ was 4.6 (3.3-5.1), 4.7 (3.9-5.5), and 3.9 (3.2-5.1) and for FAIM was 3.7 (3.0-4.0), 3.4 (2.8-4.0), and 3.2 (2.7-4.1), respectively. FAQLQ and FAIM scores were correlated with the reported probability of using the rescue anaphylaxis set upon reaction (15.4%, p = 0.04 and 17.8%, p = 0.02, respectively) and pistachio allergy (FAQLQ: 4.8 vs. 4.0, p = 0.04; FAIM: 3.5 vs. 3.2, p = 0.03). Patients with additional food allergies reported worse FAQLQ scores (4.6 vs. 3.8, p = 0.05). Worse FAIM scores were associated with younger age (-18.2%, p = 0.01) and the number of life-threatening allergic reactions (25.3%, p < 0.001). The overall impact of tree nut and/or peanut allergy on patients' quality of life is moderate but differs with age, the type of nut, the use of adrenaline, and the number of previous reactions. The aspects of life affected and contributed factors also vary across age groups.
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Affiliation(s)
- Maria Pasioti
- Allergy Department, 2nd Pediatric Clinic, National and Kapodistrian University of Athens, Athens General Children's Hospital Panagioti and Aglaia Kyriakou, Thivon & Levadias, Ambelokipoi, 115 27 Athens, Greece
- Allergy Department, 2nd Pediatric Clinic, National and Kapodistrian University of Athens, Fidippidou Street, 4th Floor, Goudi, 115 27 Athens, Greece
| | - Maria Savva
- Allergy Department, 2nd Pediatric Clinic, National and Kapodistrian University of Athens, Athens General Children's Hospital Panagioti and Aglaia Kyriakou, Thivon & Levadias, Ambelokipoi, 115 27 Athens, Greece
| | - John Lakoumentas
- Allergy Department, 2nd Pediatric Clinic, National and Kapodistrian University of Athens, Athens General Children's Hospital Panagioti and Aglaia Kyriakou, Thivon & Levadias, Ambelokipoi, 115 27 Athens, Greece
| | - Evangelia Kompoti
- Allergology Department, "Laikon" General Hospital, 115 27 Athens, Greece
| | - Michael Makris
- Allergy Unit 'D. Kalogeromitros', 2nd Department of Dermatology and Venereology, Medical School, National and Kapodistrian University of Athens, University General Hospital "Attikon", 124 62 Chaidari, Greece
| | - Paraskevi Xepapadaki
- Allergy Department, 2nd Pediatric Clinic, National and Kapodistrian University of Athens, Athens General Children's Hospital Panagioti and Aglaia Kyriakou, Thivon & Levadias, Ambelokipoi, 115 27 Athens, Greece
| | - Nikolaos G Papadopoulos
- Allergy Department, 2nd Pediatric Clinic, National and Kapodistrian University of Athens, Athens General Children's Hospital Panagioti and Aglaia Kyriakou, Thivon & Levadias, Ambelokipoi, 115 27 Athens, Greece
- Division of Immunology, Immunity to Infection and Respiratory Medicine, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester M13 9PL, UK
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Giannetti A, Ruggi A, Ricci G, Giannì G, Caffarelli C. Natural History of Hazelnut Allergy and Current Approach to Its Diagnosis and Treatment. CHILDREN (BASEL, SWITZERLAND) 2023; 10:children10030585. [PMID: 36980143 PMCID: PMC10047188 DOI: 10.3390/children10030585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 03/13/2023] [Accepted: 03/17/2023] [Indexed: 03/30/2023]
Abstract
Hazelnut allergy is the most prevalent type of nut allergy in Europe, with symptoms that can range from mild, such as hives and itching, to severe, such as anaphylaxis, particularly in patients who are sensitized to highly stable allergens, such as storage proteins. Compared to other types of food allergies, allergies to tree nuts, including hazelnuts, tend to persist throughout life. Although symptoms can appear in early childhood, they often continue into adulthood, with a minority of cases improving during adolescence. Currently, there is no curative treatment available for hazelnut allergy, and patients must adhere to a restrictive diet and carry autoinjective epinephrine. However, oral allergen immunotherapy (AIT) is a promising treatment option. Patients can be categorized based on their risk for severe reactions using various clinical, in vivo, and in vitro tests, including component-resolved diagnosis and oral food challenge. This review aims to provide an overview of the current knowledge of the natural history of hazelnut allergy and new approaches for its diagnosis and management.
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Affiliation(s)
- Arianna Giannetti
- Paediatrics Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy
| | - Alessandro Ruggi
- Specialty School of Pediatrics, Alma Mater Studiorum, University of Bologna, 40138 Bologna, Italy
| | - Giampaolo Ricci
- Department of Medical and Surgical Sciences (DIMEC), University of Bologna, 40138 Bologna, Italy
| | - Giuliana Giannì
- Clinica Pediatrica, Azienda Ospedaliero-Universitaria, Medicine and Surgery Department, Università di Parma, 43126 Parma, Italy
| | - Carlo Caffarelli
- Clinica Pediatrica, Azienda Ospedaliero-Universitaria, Medicine and Surgery Department, Università di Parma, 43126 Parma, Italy
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Post hoc analysis examining symptom severity reduction and symptom absence during food challenges in individuals who underwent oral immunotherapy for peanut allergy: results from three trials. ALLERGY, ASTHMA, AND CLINICAL IMMUNOLOGY : OFFICIAL JOURNAL OF THE CANADIAN SOCIETY OF ALLERGY AND CLINICAL IMMUNOLOGY 2023; 19:21. [PMID: 36915184 PMCID: PMC10009988 DOI: 10.1186/s13223-023-00757-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 01/02/2023] [Indexed: 03/16/2023]
Abstract
PURPOSE Peanut allergy and its current management, involving peanut avoidance and use of rescue medication during instances of accidental exposure, are burdensome to patients and their caregivers and can be a source of stress, uncertainty, and restriction. Physicians may also be frustrated with a lack of effective and safe treatments other than avoidance in the current management of peanut allergy. Efficacy, determined using double-blind, placebo-controlled food challenges (DBPCFCs), of oral immunotherapy with peanut (Arachis hypogaea) allergen powder-dnfp (PTAH; Palforzia®) was demonstrated versus placebo in children and adolescents aged 4 to 17 years in multiple phase 3 trials; continued benefit of PTAH was shown in a follow-on trial. The DBPCFC is a reproducible, rigorous, and clinically meaningful assessment accepted by regulatory authorities to evaluate the level of tolerance as an endpoint for accidental exposures to peanut in real life. It also provides useful clinical and patient-relevant information, including the amount of peanut protein an individual with peanut allergy can consume without experiencing dose-limiting symptoms, severity of symptoms, and organs affected upon ingestion of peanut protein. We explored symptoms of peanut exposure during DBPCFCs from phase 3 and follow-on trials of PTAH to further characterize treatment efficacy from a perspective relevant to patients, caregivers, and clinicians. METHODS Symptom data recorded during screening and/or exit DBPCFCs from participants aged 4 to 17 years receiving PTAH or placebo were examined post hoc across three PTAH trials (PALISADE [ARC003], ARC004 [PALISADE follow-on], and ARTEMIS [ARC010]). The maximum peanut protein administered as a single dose during DBPCFCs was 1000 mg (PALISADE and ARTEMIS) and 2000 mg (ARC004). Symptoms were classified by system organ class (SOC) and maximum severity. Endpoints were changes in symptom severity and freedom from symptoms (ie, asymptomatic) during DBPCFC. Relative risk (RR) was calculated for symptom severity by SOC and freedom from symptoms between groups; descriptive statistics were used to summarize all other data. RESULTS The risk of any respiratory (RR 0.42 [0.30-0.60], P < 0.0001), gastrointestinal (RR 0.34 [0.26-0.44], P < 0.0001), cardiovascular/neurological (RR 0.17 [0.08-0.39], P < 0.001), or dermatological (RR 0.33 [0.22-0.50], P < 0.0001) symptoms was significantly lower in participants treated with PTAH versus placebo upon exposure to peanut at the end of the PALISADE trial (ie, exit DBPCFC). Compared with placebo-treated participants (23.4%), the majority (76.3%) of PTAH-treated participants had no symptoms at the exit DBPCFC when tested at the peanut protein dose not tolerated (ie, reactive dose) during the screening DBPCFC. Significantly higher proportions of PTAH-treated participants were asymptomatic at doses ≤ 100 mg in the exit DBPCFC compared with placebo-treated participants (PALISADE: 69.35% vs 12.10%, RR 5.73 [95% confidence interval (CI) 3.55-9.26]; P < 0.0001; ARTEMIS: 67.42% vs 13.95%, RR 4.83 [95% CI 2.28-10.25]; P < 0.0001); findings were similar at peanut protein doses ≤ 1000 mg (PALISADE: RR 15.56 [95% CI 5.05-47.94]; P < 0.0001; ARTEMIS: RR 34.74 [95% CI 2.19-551.03]; P < 0.0001). In ARC004, as the period of PTAH maintenance became longer, greater proportions of participants were asymptomatic at doses of peanut protein ≤ 1000 mg in the exit DBPCFC (from 37.63% after ~ 6 months of maintenance treatment [exit DBPCFC of PALISADE] to 45.54% after ~ 13 months and 58.06% after ~ 20 months of overall PTAH maintenance treatment). CONCLUSIONS PTAH significantly reduced symptom severity due to exposure to peanut, which is clinically relevant. When exposed to peanut, participants with peanut allergy treated with PTAH rarely had moderate or severe respiratory or cardiovascular/neurological symptoms. Oral immunotherapy with PTAH appears to reduce frequency and severity of allergic reactions in individuals with peanut allergy after accidental exposure to peanut and may enable them and their families to have an improved quality of life. Trial registration ClinicalTrials.gov, NCT02635776, registered 17 December 2015, https://clinicaltrials.gov/ct2/show/NCT02635776?term=AR101&draw=2&rank=7 ; ClinicalTrials.gov, NCT02993107, registered 08 December 2016, https://clinicaltrials.gov/ct2/show/NCT02993107?term=AR101&draw=2&rank=6 ; ClinicalTrials.gov, NCT03201003, registered 22 June 2017, https://clinicaltrials.gov/ct2/show/NCT03201003 ? term = AR101&draw = 2&rank = 9.
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Berlic M, Jug U, Battelino T, Levart A, Dimitrovska I, Albreht A, Korošec M. Antioxidant-rich foods and nutritional value in daily kindergarten menu: A randomized controlled evaluation executed in Slovenia. Food Chem 2023; 404:134566. [DOI: 10.1016/j.foodchem.2022.134566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 09/16/2022] [Accepted: 10/08/2022] [Indexed: 11/06/2022]
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Luparelli A, Losito I, De Angelis E, Pilolli R, Monaci L. Multi-Target Detection of Nuts and Peanuts as Hidden Allergens in Bakery Products through Bottom-Up Proteomics and High-Resolution Mass Spectrometry. Foods 2023; 12:726. [PMID: 36832800 PMCID: PMC9955278 DOI: 10.3390/foods12040726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 02/01/2023] [Accepted: 02/02/2023] [Indexed: 02/11/2023] Open
Abstract
Due to the growing global incidence of allergy to nuts and peanuts, the need for better protection of consumers sensitive to those products is constantly increasing. The best strategy to defend them against adverse immunological reactions still remains the total removal of those products from their diet. However, nuts and peanuts traces can also be hidden in other food products, especially processed ones, such as bakery products, because of cross-contamination occurring during production. Precautionary labelling is often adopted by producers to warn allergic consumers, usually without any evaluation of the actual risk, which would require a careful quantification of nuts/peanuts traces. In this paper, the development of a multi-target method based on liquid chromatography-tandem high resolution mass spectrometry (LC-MS, MS/MS), able to detect traces of five nuts species (almonds, hazelnuts, walnuts, cashews and pistachios) and of peanuts in an in-house incurred bakery product (cookie) through a single analysis is described. Specifically, allergenic proteins of the six ingredients were used as the analytical targets, and the LC-MS responses of selected peptides resulting from their tryptic digestion, after extraction from the bakery product matrix, were exploited for quantification, following a bottom-up approach typical of proteomics. As a result, nuts/peanuts could be detected/quantified down to mg·kg-1 levels in the model cookie, thus opening interesting perspectives for the quantification of hidden nuts/peanuts in bakery products and, consequently, for a more rational use of precautionary labelling.
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Affiliation(s)
- Anna Luparelli
- Institute of Sciences of Food Production, National Research Council (ISPA-CNR), Via G. Amendola, 122/O, 70126 Bari, Italy
- Department of Chemistry, University of Bari “Aldo Moro”, Via E. Orabona 4, 70126 Bari, Italy
| | - Ilario Losito
- Department of Chemistry, University of Bari “Aldo Moro”, Via E. Orabona 4, 70126 Bari, Italy
- SMART Inter-Department Research Center, University of Bari “Aldo Moro”, Via E. Orabona 4, 70126 Bari, Italy
| | - Elisabetta De Angelis
- Institute of Sciences of Food Production, National Research Council (ISPA-CNR), Via G. Amendola, 122/O, 70126 Bari, Italy
| | - Rosa Pilolli
- Institute of Sciences of Food Production, National Research Council (ISPA-CNR), Via G. Amendola, 122/O, 70126 Bari, Italy
| | - Linda Monaci
- Institute of Sciences of Food Production, National Research Council (ISPA-CNR), Via G. Amendola, 122/O, 70126 Bari, Italy
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Prevalence of nut allergen sensitization among children in central Poland. Postepy Dermatol Alergol 2023; 40:40-46. [PMID: 36909898 PMCID: PMC9993204 DOI: 10.5114/ada.2022.124730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 04/28/2022] [Indexed: 03/03/2023] Open
Abstract
Introduction The diagnostics of plant-derived food allergy may be challenging. However, the recognition of sensitization patterns in defined populations, especially in children, is clinically relevant as it enables the use of secondary prophylaxis to prevent life-threatening complications. Aim To investigate the rates and sensitization patterns to nut allergens in children from central Poland. Material and methods The retrospective assessment concerned data of 598 children diagnosed in a single centre due to suspected food allergy. The analysis included the results of component-based multiparametric assay Allergy Explorer2 (ALEX2). Results The sensitization to particular nut allergens varied among patients, depending on their age and nut type. The sensitization to any nut was found in 67% of children, whereas sensitization to hazelnut and peanut was the most common (56% and 55% of all children, respectively). Hazelnut sensitization was predominant in every age, and its prevalence increased with age, while peanut sensitization was detected in more than half of individuals from all groups, except for teenagers (44% of cases). Among hazelnut molecules sensitization to Cor a 1.04 was the most prevalent (74% of sensitized children), and for peanut allergens - Ara h 1 (65% of sensitized patients). The simultaneous sensitization to hazelnut, peanut and walnut (two or all of them) was found in almost half of the entire group. Conclusions Component-based diagnostics enables differentiation between primary and cross-reactive sensitization to nut allergens and detects co-sensitization. The clinical relevance of the latter observation is remarkable as co-sensitization increases the risk of life-threatening reactions even in trace nut contamination.
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Tree nut introduction in infants with peanut and/or egg allergy. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY. IN PRACTICE 2023; 11:658-660. [PMID: 36347470 DOI: 10.1016/j.jaip.2022.10.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 10/17/2022] [Accepted: 10/27/2022] [Indexed: 11/08/2022]
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Huang YY, Liang YT, Wu JM, Wu WT, Liu XT, Ye TT, Chen XR, Zeng XA, Manzoor MF, Wang LH. Advances in the Study of Probiotics for Immunomodulation and Intervention in Food Allergy. Molecules 2023; 28:molecules28031242. [PMID: 36770908 PMCID: PMC9919562 DOI: 10.3390/molecules28031242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/15/2023] [Accepted: 01/18/2023] [Indexed: 01/31/2023] Open
Abstract
Food allergies are a serious food safety and public health issue. Soybean, dairy, aquatic, poultry, and nut products are common allergens inducing allergic reactions and adverse symptoms such as atopic dermatitis, allergic eczema, allergic asthma, and allergic rhinitis. Probiotics are assumed as an essential ingredient in maintaining intestinal microorganisms' composition. They have unique physiological roles and therapeutic effects in maintaining the mucosal barrier, immune function, and gastrointestinal tract, inhibiting the invasion of pathogenic bacteria, and preventing diarrhea and food allergies. Multiple pieces of evidence reveal a significant disruptive effect of probiotics on food allergy pathology and progression mechanisms. Thus, this review describes the allergenic proteins as an entry point and briefly describes the application of probiotics in allergenic foods. Then, the role of probiotics in preventing and curing allergic diseases by regulating human immunity through intestinal flora and intestinal barrier, modulating host immune active cells, and improving host amino acid metabolism are described in detail. The anti-allergic role of probiotics in the function and metabolism of the gastrointestinal tract has been comprehensively explored to furnish insights for relieving food allergy symptoms and preventing food allergy.
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Affiliation(s)
- Yan-Yan Huang
- College of Food Science and Engineering, Foshan University, Foshan 528225, China
- Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing, Foshan University, Foshan 528225, China
| | - Yan-Tong Liang
- College of Food Science and Engineering, Foshan University, Foshan 528225, China
- Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing, Foshan University, Foshan 528225, China
| | - Jia-Min Wu
- College of Food Science and Engineering, Foshan University, Foshan 528225, China
- Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing, Foshan University, Foshan 528225, China
| | - Wei-Tong Wu
- College of Food Science and Engineering, Foshan University, Foshan 528225, China
- Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing, Foshan University, Foshan 528225, China
| | - Xin-Tong Liu
- College of Food Science and Engineering, Foshan University, Foshan 528225, China
- Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing, Foshan University, Foshan 528225, China
| | - Ting-Ting Ye
- College of Food Science and Engineering, Foshan University, Foshan 528225, China
- Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing, Foshan University, Foshan 528225, China
| | - Xiao-Rong Chen
- College of Food Science and Engineering, Foshan University, Foshan 528225, China
- Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing, Foshan University, Foshan 528225, China
| | - Xin-An Zeng
- College of Food Science and Engineering, Foshan University, Foshan 528225, China
- Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing, Foshan University, Foshan 528225, China
- Correspondence: (X.-A.Z.); (M.F.M.); (L.-H.W.)
| | - Muhammad Faisal Manzoor
- College of Food Science and Engineering, Foshan University, Foshan 528225, China
- Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing, Foshan University, Foshan 528225, China
- Correspondence: (X.-A.Z.); (M.F.M.); (L.-H.W.)
| | - Lang-Hong Wang
- College of Food Science and Engineering, Foshan University, Foshan 528225, China
- Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing, Foshan University, Foshan 528225, China
- Correspondence: (X.-A.Z.); (M.F.M.); (L.-H.W.)
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Torii A, Seki Y, Arimoto C, Hojo N, Iijima K, Nakamura K, Ito R, Yamakawa H, Akiyama H. Development of a simple and reliable LC-MS/MS method to simultaneously detect walnut and almond as specified in food allergen labelling regulations in processed foods. Curr Res Food Sci 2023; 6:100444. [PMID: 36699117 PMCID: PMC9868337 DOI: 10.1016/j.crfs.2023.100444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 12/21/2022] [Accepted: 01/11/2023] [Indexed: 01/15/2023] Open
Abstract
We developed a simple and reliable analytical method using high-performance liquid chromatography-tandem mass spectrometry (LC-MS/MS) to simultaneously detect walnut and almond as specified in regulations for food allergen labelling in processed foods. Five specific target peptides derived from walnut 2S albumin and 7S globulin and three target peptides from almond 11S globulin were selected by analysing several varieties of walnut and almond, eight kinds of other nuts, and ten kinds of major allergen ingredients or cereals. The limit of detection for the walnut 2S albumin peptide GEEMEEMVQSAR (m/z 698.3 [precursor] > 316.1 [product]) was 0.22 ± 0.02 μg/g, and that for almond 11S globulin peptide GNLDFVQPPR (m/z 571.8 [precursor] > 369.2 [product]) was 0.08 ± 0.02 μg/g when extracted walnut and almond protein were spiked into butter cookie chocolate ice cream. These peptides had good linearity (R2 > 0.999) for each calibration curve with a range of 0.1-50 μg/mL protein concentration in the sample solutions, and sufficient recovery rates (90.4-101.5%) from the spiked samples. The developed analytical approach is applicable to a wide variety of processed foods for food allergen labelling.
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Affiliation(s)
- Akira Torii
- Nisshin Seifun Group Inc., 5-3-1 Tsurugaoka, Fujimino-City, Saitama, 356-8511, Japan
- Hoshi University, School of Pharmacy, Department of Analytical Chemistry, 2-4-41 Ebara, Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Yusuke Seki
- Nisshin Seifun Group Inc., 5-3-1 Tsurugaoka, Fujimino-City, Saitama, 356-8511, Japan
| | - Chisato Arimoto
- Nisshin Seifun Group Inc., 5-3-1 Tsurugaoka, Fujimino-City, Saitama, 356-8511, Japan
| | - Naomi Hojo
- Nisshin Seifun Group Inc., 5-3-1 Tsurugaoka, Fujimino-City, Saitama, 356-8511, Japan
| | - Ken Iijima
- Nisshin Seifun Group Inc., 5-3-1 Tsurugaoka, Fujimino-City, Saitama, 356-8511, Japan
| | - Kosuke Nakamura
- National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa, 210-9501, Japan
| | - Rie Ito
- Hoshi University, School of Pharmacy, Department of Analytical Chemistry, 2-4-41 Ebara, Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Hirohito Yamakawa
- Nisshin Seifun Group Inc., 5-3-1 Tsurugaoka, Fujimino-City, Saitama, 356-8511, Japan
| | - Hiroshi Akiyama
- Hoshi University, School of Pharmacy, Department of Analytical Chemistry, 2-4-41 Ebara, Shinagawa-ku, Tokyo, 142-8501, Japan
- National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa, 210-9501, Japan
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Jonas da Rocha Esperança V, Corrêa de Souza Coelho C, Tonon R, Torrezan R, Freitas-Silva O. A review on plant-based tree nuts beverages: technological, sensory, nutritional, health and microbiological aspects. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2022. [DOI: 10.1080/10942912.2022.2134417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Victor Jonas da Rocha Esperança
- Food and Nutrition Graduate Program, Federal University of State of Rio de Janeiro (PPGAN/ UNIRIO). Av. Pasteur, Rio de Janeiro, Brasil
| | - Caroline Corrêa de Souza Coelho
- Food and Nutrition Graduate Program, Federal University of State of Rio de Janeiro (PPGAN/ UNIRIO). Av. Pasteur, Rio de Janeiro, Brasil
| | - Renata Tonon
- Centro de Tecnologia Agrícola e Alimentar/CTAA, EMBRAPA Agroindústria de Alimentos, Av. das Américas, Rio de Janeiro, Brasil
| | - Renata Torrezan
- Centro de Tecnologia Agrícola e Alimentar/CTAA, EMBRAPA Agroindústria de Alimentos, Av. das Américas, Rio de Janeiro, Brasil
| | - Otniel Freitas-Silva
- Centro de Tecnologia Agrícola e Alimentar/CTAA, EMBRAPA Agroindústria de Alimentos, Av. das Américas, Rio de Janeiro, Brasil
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Alves PB, Pereira HP, Alves MP, Roseta L, Tavares B, Loureiro G, Carrapatoso I, Todo-Bom A, Regateiro FS. Predictors of anaphylaxis to peanut and tree nuts in a Mediterranean population. Allergy Asthma Proc 2022; 43:533-542. [PMID: 36335421 DOI: 10.2500/aap.2022.43.220060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Background: Peanuts (PN) and tree nuts (TN) are major causes of anaphylaxis worldwide. We aimed to determine the clinical and demographic characteristics associated with anaphylaxis in patients sensitized to PN and/or TN in a Mediterranean population. Methods: We conducted a retrospective study, which included 198 patients allergic to PN and/or TN (allergy symptoms plus specific immunoglobulin E [sIgE] sensitization), evaluated in consultations from January 2015 to December 2020. Univariate analysis and multivariate logistic regression models were developed, including demographic, clinical, and laboratory data as independent variables, and anaphylaxis to each PN and/or TN as a dependent variables. Results: Anaphylaxis was associated with an earlier age of onset of allergy to PN, cashew and/or pistachio, and pine nut allergy but not to other TN allergies. Gender, atopic comorbidities, and cofactors were not associated with PN and/or TN anaphylaxis. Anaphylaxis to PN, cashew and/or pistachio, and pine nut were associated with reactivity to a fewer number of PN and/or TN foods. Although sIgE sensitization to lipid transfer proteins (LTP) was highly prevalent in our population, only seed storage protein (SSP) positivity was associated with anaphylaxis in PN allergy. The absence of pathogenesis-related protein family 10 sensitization correlated with PN and hazelnut anaphylaxis. A higher level of sIgE to almond extract predicted anaphylaxis but the level of sIgE to other PN and/or TN extracts did not predict it. Conclusion: The high prevalence of sensitization to the pan-allergen LTP did not seem to have a significant impact in PN and/or TN allergy severity in our study. Instead, other factors, such as early age of onset and positivity for SSPs, seem to strongly associate with anaphylaxis to specific PN and/or TN. These findings may contribute to individual risk assessment in these populations.
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Affiliation(s)
- Pedro B Alves
- From the Allergy and Clinical Immunology Unit, University Hospital of Coimbra, Coimbra, Portugal
| | - Helena P Pereira
- From the Allergy and Clinical Immunology Unit, University Hospital of Coimbra, Coimbra, Portugal
| | - Marta P Alves
- From the Allergy and Clinical Immunology Unit, University Hospital of Coimbra, Coimbra, Portugal
| | - Luis Roseta
- Clinical Pathology Unit, University Hospital of Coimbra, Coimbra, Portugal
| | - Beatriz Tavares
- From the Allergy and Clinical Immunology Unit, University Hospital of Coimbra, Coimbra, Portugal
| | - Graça Loureiro
- From the Allergy and Clinical Immunology Unit, University Hospital of Coimbra, Coimbra, Portugal
| | - Isabel Carrapatoso
- From the Allergy and Clinical Immunology Unit, University Hospital of Coimbra, Coimbra, Portugal
| | - Ana Todo-Bom
- From the Allergy and Clinical Immunology Unit, University Hospital of Coimbra, Coimbra, Portugal
| | - Frederico S Regateiro
- From the Allergy and Clinical Immunology Unit, University Hospital of Coimbra, Coimbra, Portugal
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Identification and Annotation of Peptide Allergens in Prunus dulcis. Int J Pept Res Ther 2022. [DOI: 10.1007/s10989-022-10468-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Bae YJ, Kim MH, Choi MK. Dietary Mineral Intake from Nuts and Its Relationship to Hypertension Among Korean Adults. Biol Trace Elem Res 2022; 200:3519-3528. [PMID: 34661846 DOI: 10.1007/s12011-021-02952-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 10/04/2021] [Indexed: 12/11/2022]
Abstract
Accumulating evidence shows that nut consumption beneficially affects health outcomes. The purpose of this study was to investigate the association between the intake of nuts, focusing on their mineral contents, and the risk of hypertension in nationally representative samples in Korea. A cross-sectional study was conducted among 12,113 subjects (4762 men and 7351 women) aged 19-64 years using raw data from KNHANES 2016-2019. Daily intake of 20 nuts and 9 minerals from nuts was assessed using the 24-h recall method. The risk of hypertension according to the median mineral intake from nuts and nuts themselves was assessed using logistic regression analysis with adjustment for potential confounders. The average daily nut intake was 4.34 g for females and 3.78 g males. Among nut intake, chestnuts represented the highest value at 0.95 g/day, followed by peanuts (0.72 g/day), almonds (0.62 g/day), sesame seeds (0.62 g/day), perilla seeds (0.33 g/day), and walnuts (0.32 g/day). The daily intake of minerals from nuts was significantly higher in the nut-overmedian (OM) group than in the nut-undermedian (UM) group. Regarding mineral intake from nuts, each mineral-UM group showed higher odds of hypertension than the mineral-OM group in women, but not in men. After adjustment for potential confounders, an inverse association between nut consumption, including minerals obtained from nuts, and hypertension prevalence, especially in women, was observed. Based on our results, it is suggested that incorporation of nuts into a daily diet may yield beneficial effects and lower the risk of hypertension in adult Korean women.
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Affiliation(s)
- Yun-Jung Bae
- Major in Food and Nutrition, Korea National University of Transportation, Jeungpyeong, 27909, South Korea
| | - Mi-Hyun Kim
- Department of Food and Nutrition, Kongju National University, Yesan, 32439, South Korea
| | - Mi-Kyeong Choi
- Department of Food and Nutrition, Kongju National University, Yesan, 32439, South Korea.
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Food Allergies: Immunosensors and Management. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12052393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Food allergies (FA) are commonly depicted as immune responses. The mechanism of allergic reactions involves immunoglobulin E (IgE) and non-immunoglobulin E (non-IgE)-related responses caused by contact with specific foods. FAs can be fatal, have negative effects and have become the subject of fanaticism in recent years. In terms of food safety, allergic compounds have become a problem. The immune response to allergens is different to that from food intolerance, pharmacological reactions, and poisoning. The most important allergenic foods are soybeans, milk, eggs, groundnuts, shellfishes, tree nuts, cereals and fish, which together are known as the “Big Eight”. This review will introduce and discuss FAs in milk, peanuts, nuts, shellfishes, eggs and wheat and their detections and potential treatments will also be provided. We believe that this review may provide important information regarding food-induced allergies for children who have allergic reactions and help them avoid the allergenic food in the future.
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22
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Foo AC, Nesbit JB, Gipson SA, Cheng H, Bushel P, DeRose EF, Schein CH, Teuber SS, Hurlburt BK, Maleki SJ, Mueller GA. Structure, Immunogenicity, and IgE Cross-Reactivity among Walnut and Peanut Vicilin-Buried Peptides. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:2389-2400. [PMID: 35139305 PMCID: PMC8959100 DOI: 10.1021/acs.jafc.1c07225] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Vicilin-buried peptides (VBPs) from edible plants are derived from the N-terminal leader sequences (LSs) of seed storage proteins. VBPs are defined by a common α-hairpin fold mediated by conserved CxxxCx(10-14)CxxxC motifs. Here, peanut and walnut VBPs were characterized as potential mediators of both peanut/walnut allergenicity and cross-reactivity despite their low (∼17%) sequence identity. The structures of one peanut (AH1.1) and 3 walnut (JR2.1, JR2.2, JR2.3) VBPs were solved using solution NMR, revealing similar α-hairpin structures stabilized by disulfide bonds with high levels of surface similarity. Peptide microarrays identified several peptide sequences primarily on AH1.1 and JR2.1, which were recognized by peanut-, walnut-, and dual-allergic patient IgE, establishing these peanut and walnut VBPs as potential mediators of allergenicity and cross-reactivity. JR2.2 and JR2.3 displayed extreme resilience against endosomal digestion, potentially hindering epitope generation and likely contributing to their reduced allergic potential.
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Affiliation(s)
- Alexander C.Y. Foo
- National Institute of Environmental Health Sciences, 111 T.W. Alexander Dr, MD-MR01, Research Triangle Park, NC 27615
| | - Jacqueline B. Nesbit
- US Department of Agriculture -Agricultural Research Service, 1100 Robert E. Lee Blvd, New Orleans, LA 70122
| | - Stephen A.Y. Gipson
- US Department of Agriculture -Agricultural Research Service, 1100 Robert E. Lee Blvd, New Orleans, LA 70122
| | - Hsiaopo Cheng
- US Department of Agriculture -Agricultural Research Service, 1100 Robert E. Lee Blvd, New Orleans, LA 70122
| | - Pierre Bushel
- National Institute of Environmental Health Sciences, 111 T.W. Alexander Dr, MD-MR01, Research Triangle Park, NC 27615
| | - Eugene F. DeRose
- National Institute of Environmental Health Sciences, 111 T.W. Alexander Dr, MD-MR01, Research Triangle Park, NC 27615
| | - Catherine H. Schein
- Department of Biochemistry and Molecular Biology, Institute for Human Infections and Immunity, University of Texas Medical Branch, 301 University Blvd., Galveston, TX 77555
| | - Suzanne S. Teuber
- University of California Davis School of Medicine, 2315 Stockton Blvd, Sacramento, CA 95817
| | - Barry K. Hurlburt
- US Department of Agriculture -Agricultural Research Service, 1100 Robert E. Lee Blvd, New Orleans, LA 70122
| | - Soheila J. Maleki
- US Department of Agriculture -Agricultural Research Service, 1100 Robert E. Lee Blvd, New Orleans, LA 70122
| | - Geoffrey A. Mueller
- National Institute of Environmental Health Sciences, 111 T.W. Alexander Dr, MD-MR01, Research Triangle Park, NC 27615
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23
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Tagliati S, Barni S, Giovannini M, Liccioli G, Sarti L, Alicandro T, Paladini E, Perferi G, Azzari C, Novembre E, Mori F. Nut Allergy: Clinical and Allergological Features in Italian Children. Nutrients 2021; 13:4076. [PMID: 34836333 PMCID: PMC8623984 DOI: 10.3390/nu13114076] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 11/11/2021] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Nut allergies are an increasingly frequent health issue in the pediatric population. Tree nuts (TN) and peanuts are the second cause of food anaphylaxis in Italy. Unfortunately, knowledge of the clinical characteristics of a TN allergy in Italian children is limited. Our study aimed to identify the clinical and allergological characteristics of Italian children with a nut allergy (TN and peanut). METHODS A retrospective observational analysis was performed on the clinical charts of children with a history of nut reaction referred to the allergy unit of the hospital from 2015 to 2019. The studied population was represented by children with a confirmed nut allergy based on positive prick by prick and/or serum-specific IgE to nut plus a positive nut oral food challenge. Demographic, clinical, and allergological features were studied and compared among different nuts. RESULTS In total, 318 clinical charts were reviewed. Nut allergy was confirmed in 113 patients. Most patients (85/113, 75%) had a familial history of allergy and/or a concomitant allergic disorder (77/113, 68%). Hazelnut and walnut were the more common culprit nuts observed in allergic children. Anaphylaxis was the first clinical manifestation of nut allergy in a high percentage of children (54/113, 48%). The mean age of the first nut reaction was statistically higher with pine nuts. Over 75% of children reported a single nut reaction. During the OFCs, the signs and symptoms involved mainly the gastrointestinal system (82/113, 73%) and resolved spontaneously in most cases. Severe reactions were not frequent (22/113, 19%). CONCLUSION To our knowledge, this is the first Italian study that provided a comprehensive characterization of children with a nut allergy. These results are important for clinicians treating children with a nut allergy.
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Affiliation(s)
- Sylvie Tagliati
- Pediatric Unit, Sant’Anna University Hospital of Ferrara, 44124 Ferrara, Italy;
| | - Simona Barni
- Allergy Unit, Department of Pediatrics, Meyer Children’s University Hospital, 50139 Florence, Italy; (S.B.); (G.L.); (L.S.); (E.N.); (F.M.)
| | - Mattia Giovannini
- Allergy Unit, Department of Pediatrics, Meyer Children’s University Hospital, 50139 Florence, Italy; (S.B.); (G.L.); (L.S.); (E.N.); (F.M.)
| | - Giulia Liccioli
- Allergy Unit, Department of Pediatrics, Meyer Children’s University Hospital, 50139 Florence, Italy; (S.B.); (G.L.); (L.S.); (E.N.); (F.M.)
| | - Lucrezia Sarti
- Allergy Unit, Department of Pediatrics, Meyer Children’s University Hospital, 50139 Florence, Italy; (S.B.); (G.L.); (L.S.); (E.N.); (F.M.)
| | - Tatiana Alicandro
- Division of Allergy and Clinical Immunology, Dermatology Unit, Surgical, Medical and Dental Department of Morphological Science Related to Transplant, Oncology and Regenerative Medicine, University of Modena and Reggio Emilia, 41124 Modena, Italy;
| | - Erika Paladini
- Pediatric Respiratory and Allergy Unit, Women’s and Children’s Health Department, University of Padua, 35128 Padua, Italy;
| | - Giancarlo Perferi
- Section of Pediatrics, Department of Health Sciences, University of Florence and Meyer Children’s Hospital, 50139 Florence, Italy; (G.P.); (C.A.)
| | - Chiara Azzari
- Section of Pediatrics, Department of Health Sciences, University of Florence and Meyer Children’s Hospital, 50139 Florence, Italy; (G.P.); (C.A.)
| | - Elio Novembre
- Allergy Unit, Department of Pediatrics, Meyer Children’s University Hospital, 50139 Florence, Italy; (S.B.); (G.L.); (L.S.); (E.N.); (F.M.)
| | - Francesca Mori
- Allergy Unit, Department of Pediatrics, Meyer Children’s University Hospital, 50139 Florence, Italy; (S.B.); (G.L.); (L.S.); (E.N.); (F.M.)
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24
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Clinical Manifestations of Pediatric Food Allergy: a Contemporary Review. Clin Rev Allergy Immunol 2021; 62:180-199. [PMID: 34519995 DOI: 10.1007/s12016-021-08895-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/24/2021] [Indexed: 12/12/2022]
Abstract
Food allergies (FAs) are an emerging health care issue, and a "second wave of the allergy epidemic" was named. There are extensive data that documented the prevalence rate as high as approximately 10%. FAs are immunological adverse reactions, including IgE-mediated mechanisms, cell-mediated mechanisms, or mixed IgE- and cell-mediated mechanisms. A diagnosis of FA is made by specific symptoms encounter with food, detailed past history, sensitization tests, and oral food challenges (OFCs) if necessary. The component-resolved diagnostics (CRD) test can distinguish true or cross-reaction. "Minimal elimination" from the results of CRD and OFC could avoid unnecessary food restriction. Strict food limitation is harsh and stressful on patients and their families. Children with FAs experience a higher rate of post-traumatic stress symptoms (PTSS) and bullying than others. In the last 20 years, oral immunotherapy (OIT), sublingual immunotherapy (SLIT), and epicutaneous immunotherapy (EPIT) are treatment strategies. OIT and EPIT are the most two encouraging treatments for FA. This review aims to introduce FAs in diverse clinical disorders, new perspectives, and their practical implications in diagnosing and treating FA.
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25
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Manohar M, Dunham D, Gupta S, Yan Z, Zhang W, Minnicozzi S, Kirkey M, Bunning B, Chowdhury RR, Galli SJ, Boyd SD, Kost LE, Chinthrajah RS, Desai M, Oettgen HC, Maecker HT, Yu W, DeKruyff RH, Andorf S, Nadeau KC. Immune changes beyond Th2 pathways during rapid multifood immunotherapy enabled with omalizumab. Allergy 2021; 76:2809-2826. [PMID: 33782956 PMCID: PMC8609920 DOI: 10.1111/all.14833] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 02/03/2021] [Accepted: 02/15/2021] [Indexed: 12/13/2022]
Abstract
BACKGROUND Multifood oral immunotherapy (mOIT) with adjunctive anti-IgE (omalizumab, XOLAIR® ) treatment affords safe, effective, and rapid desensitization to multiple foods, although the specific immune mechanisms mediating this desensitization remain to be fully elucidated. METHODS Participants in our phase 2 mOIT trial (NCT02643862) received omalizumab from baseline to week 16 and mOIT from week 8 to week 36. We compared the immune profile of PBMCs and plasma taken at baseline, week 8, and week 36 using high-dimensional mass cytometry, component-resolved diagnostics, the indirect basophil activation test, and Luminex. RESULTS We found (i) decreased frequency of IL-4+ peanut-reactive CD4+ T cells and a marked downregulation of GPR15 expression and CXCR3 frequency among γδ and CD8+ T-cell subsets at week 8 during the initial, omalizumab-alone induction phase; (ii) significant upregulation of the skin-homing receptor CCR4 in peanut-reactive CD4+ T and Th2 effector memory (EM) cells and of cutaneous lymphocyte-associated antigen (CLA) in peanut-reactive CD8+ T and CD8+ EM cells; (iii) downregulation of CD86 expression among antigen-presenting cell subsets; and (iv) reduction in pro-inflammatory cytokines, notably IL-17, at week 36 post-OIT. We also observed significant attenuation of the Th2 phenotype post-OIT, defined by downregulation of IL-4 peanut-reactive T cells and OX40 in Th2EM cells, increased allergen component-specific IgG4/IgE ratio, and decreased allergen-driven activation of indirectly sensitized basophils. CONCLUSIONS This exploratory study provides novel comprehensive insight into the immune underpinnings of desensitization through omalizumab-facilitated mOIT. Moreover, this study provides encouraging results to support the complex immune changes that can be induced by OIT.
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Affiliation(s)
- Monali Manohar
- Sean N. Parker Center for Allergy and Asthma Research, Stanford, CA
| | - Diane Dunham
- Sean N. Parker Center for Allergy and Asthma Research, Stanford, CA
| | - Sheena Gupta
- Human Immune Monitoring Center, Institute for Immunity, Transplantation, and Infection, Stanford University School of Medicine, Stanford, CA
| | - Zheng Yan
- Sean N. Parker Center for Allergy and Asthma Research, Stanford, CA
| | - Wenming Zhang
- Sean N. Parker Center for Allergy and Asthma Research, Stanford, CA
| | - Samantha Minnicozzi
- Division of Immunology, Department of Pediatrics, Boston Children’s Hospital, Boston, MA; Department of Pediatrics, Harvard Medical School, Boston, MA
| | - Matthew Kirkey
- Sean N. Parker Center for Allergy and Asthma Research, Stanford, CA
| | - Bryan Bunning
- Sean N. Parker Center for Allergy and Asthma Research, Stanford, CA
| | | | - Stephen J. Galli
- Sean N. Parker Center for Allergy and Asthma Research, Stanford, CA
- Department of Microbiology and Immunology, Stanford, CA
- Department of Pathology, Stanford University School of Medicine, Stanford, CA
| | - Scott D. Boyd
- Sean N. Parker Center for Allergy and Asthma Research, Stanford, CA
- Department of Pathology, Stanford University School of Medicine, Stanford, CA
| | | | | | - Manisha Desai
- Department of Biomedical and Data Science, Stanford University, Stanford, CA
| | - Hans C. Oettgen
- Division of Immunology, Department of Pediatrics, Boston Children’s Hospital, Boston, MA; Department of Pediatrics, Harvard Medical School, Boston, MA
| | - Holden T. Maecker
- Human Immune Monitoring Center, Institute for Immunity, Transplantation, and Infection, Stanford University School of Medicine, Stanford, CA
- Department of Microbiology and Immunology, Stanford, CA
| | - Wong Yu
- Sean N. Parker Center for Allergy and Asthma Research, Stanford, CA
| | | | - Sandra Andorf
- Sean N. Parker Center for Allergy and Asthma Research, Stanford, CA
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, Divisions of Biomedical Informatics and Allergy & Immunology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA
| | - Kari C. Nadeau
- Sean N. Parker Center for Allergy and Asthma Research, Stanford, CA
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26
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Tan M, Nawaz MA, Buckow R. Functional and food application of plant proteins – a review. FOOD REVIEWS INTERNATIONAL 2021. [DOI: 10.1080/87559129.2021.1955918] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Melvin Tan
- Agriculture and Food, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Werribee, Victoria, Australia
| | - Malik Adil Nawaz
- Agriculture and Food, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Werribee, Victoria, Australia
| | - Roman Buckow
- School of Chemical and Biomolecular Engineering, The University of Sydney, Centre for Advanced Food Engineering, Darlington, NSW, Australia
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27
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Bager J, Tedner SG, Andersson N, Ballardini N, Borres MP, Konradsen JR, Nilsson C, Westman M, Kull I, Bergström A, van Hage M, Melen E, Asarnoj A. Prevalence and early-life risk factors for tree nut sensitization and allergy in young adults. Clin Exp Allergy 2021; 51:1429-1437. [PMID: 34357659 DOI: 10.1111/cea.13994] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 06/06/2021] [Accepted: 06/18/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Tree nut allergy may cause anaphylaxis. There are limited population-based studies on prevalence and early-life risk factors. METHODS We evaluated the prevalence of reported symptoms and allergic sensitization to tree nuts at age 24 years in the BAMSE population-based cohort study and assessed early-life factors associated with the development of tree nut allergy. We estimated tree nut allergy prevalence, by analysing questionnaire data on tree nut ingestion and symptoms at age 12, 16 and 24 years, and IgE sensitization at age 24 years to hazelnut, walnut, pecan, cashew, pistachio, Brazil nut, almond extracts and allergen molecules Cor a 1, 9, 14 (hazelnut), Jug r 1 (walnut) and Ana o 3 (cashew). We evaluated eczema, asthma, food allergies, inherited risk of allergy and gender as potential early-life risk factors. RESULTS Data were available for 2215/4089 (54%) BAMSE study participants, for estimation of the prevalence of tree nut sensitization (21.2%), tree nut allergy symptoms (9.8%) and combined sensitization and symptoms (7.9%, 2.1% for storage protein sensitization and symptoms, 4.3% for any sensitization and non-mild symptoms). Sixty-three per cent of sensitized individuals (295/470) were asymptomatic, but only 76/470 (16%) storage protein sensitized individuals. Egg allergy (ORadj 8.50 95% CI 2.15-33.6), eczema (ORadj 2.53 95% CI 1.21-5.32) and asthma (ORadj 5.59 95% CI 2.35-13.3)) at pre-school age were associated with future development of tree nut symptoms and storage protein sensitization. At age 24 years, tree nut allergy was associated with current eczema and with markers of current asthma severity. Sensitization to storage proteins was more strongly associated with symptoms than sensitization to whole extract for all tree nuts evaluated. CONCLUSIONS In this Swedish cohort, we found tree nut whole extract sensitization is common but usually asymptomatic. Storage protein sensitization is a more reliable indicator of tree nut symptoms. Tree nut allergy is associated with early onset, persistent and severe atopic disease.
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Affiliation(s)
- Jessica Bager
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
| | - Sandra G Tedner
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden.,Pediatric Allergy and Pulmonology Unit at Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - Niklas Andersson
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Natalia Ballardini
- Sachs' Children and Youth Hospital, Stockholm, Sweden.,Department of Clinical Science and Education Södersjukhuset, Karolinska Institutet, Stockholm, Sweden.,Department of Dermatology and Sexual Health, Stockholm, Sweden
| | - Magnus P Borres
- Department of Women's and Children's Health, Uppsala University and Thermo Fisher Scientific, Uppsala, Sweden
| | - Jon R Konradsen
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden.,Pediatric Allergy and Pulmonology Unit at Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - Caroline Nilsson
- Sachs' Children and Youth Hospital, Stockholm, Sweden.,Department of Clinical Science and Education Södersjukhuset, Karolinska Institutet, Stockholm, Sweden
| | - Marit Westman
- Department of Medicine Solna, Division of Immunology and Allergy, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden.,Asthma and Allergy Clinic S:t Göran, Stockholm, Sweden
| | - Inger Kull
- Sachs' Children and Youth Hospital, Stockholm, Sweden.,Department of Clinical Science and Education Södersjukhuset, Karolinska Institutet, Stockholm, Sweden
| | - Anna Bergström
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.,Centre for Occupational and Environmental Medicine, Stockholm, Sweden
| | - Marianne van Hage
- Department of Medicine Solna, Division of Immunology and Allergy, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Erik Melen
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.,Sachs' Children and Youth Hospital, Stockholm, Sweden.,Department of Clinical Science and Education Södersjukhuset, Karolinska Institutet, Stockholm, Sweden
| | - Anna Asarnoj
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden.,Pediatric Allergy and Pulmonology Unit at Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden
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28
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Abstract
Nuts are considered healthy foods due to their high content of nutritional compounds with functional properties. However, the list of the most allergenic foods includes tree nuts, and their presence must be indicated on food labels. Most nut allergens are seed storage proteins, pathogenesis-related (PR) proteins, profilins and lipid transfer proteins (LTP). Nut allergenic proteins are characterized by their resistance to denaturation and proteolysis. Food processing has been proposed as the method of choice to alter the allergenicity of foods to ensure their safety and improve their organoleptic properties. The effect of processing on allergenicity is variable by abolishing existing epitopes or generating neoallergens. The alterations depend on the intrinsic characteristics of the protein and the type and duration of treatment. Many studies have evaluated the molecular changes induced by processes such as thermal, pressure or enzymatic treatments. As some processing treatments have been shown to decrease the allergenicity of certain foods, food processing may play an important role in developing hypoallergenic foods and using them for food tolerance induction. This work provides an updated overview of the applications and influence of several processing techniques (thermal, pressure and enzymatic digestion) on nut allergenicity for nuts, namely, hazelnuts, cashews, pistachios, almonds and walnuts.
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29
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An Updated Overview of Almond Allergens. Nutrients 2021; 13:nu13082578. [PMID: 34444737 PMCID: PMC8399460 DOI: 10.3390/nu13082578] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 07/21/2021] [Accepted: 07/23/2021] [Indexed: 12/19/2022] Open
Abstract
Tree nuts are considered an important food in healthy diets. However, for part of the world’s population, they are one of the most common sources of food allergens causing acute allergic reactions that can become life-threatening. They are part of the Big Eight food groups which are responsible for more than 90% of food allergy cases in the United States, and within this group, almond allergies are persistent and normally severe and life-threatening. Almond is generally consumed raw, toasted or as an integral part of other foods. Its dietary consumption is generally associated with a reduced risk of cardiovascular diseases. Several almond proteins have been recognized as allergens. Six of them, namely Pru du 3, Pru du 4, Pru du 5, Pru du 6, Pru du 8 and Pru du 10, have been included in the WHO-IUIS list of allergens. Nevertheless, further studies are needed in relation to the accurate characterization of the already known almond allergens or putative ones and in relation to the IgE-binding properties of these allergens to avoid misidentifications. In this context, this work aims to critically review the almond allergy problematic and, specifically, to perform an extensive overview regarding known and novel putative almond allergens.
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30
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Hsu C, Yong M, Pozin J, Makhija M, Singh AM. Clinical Predictors and Outcomes of Oral Food Challenges Illustrate Differences Among Individual Tree Nuts. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY-IN PRACTICE 2021; 9:3728-3734.e1. [PMID: 34146750 DOI: 10.1016/j.jaip.2021.05.035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 05/27/2021] [Accepted: 05/28/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND Although allergy to tree nuts is often considered a single entity, there is heterogeneity in patient reactivity and immune response to different tree nuts. OBJECTIVE We sought to characterize tree nut oral food challenges (OFCs) in a pediatric population performed at a single center over a 12-year period and determine differences in OFC outcome to different tree nuts. METHODS A retrospective chart review was conducted in patients (0-20 years) who completed an unblinded OFC to any tree nut from 2007 to 2019 at Lurie Chlildren's Hospital of Chicago. Differences among almond, cashew, hazelnut, and walnut challenges were compared, and probability curves were used to estimate positive predictive values (PPVs) of specific IgE at OFC. RESULTS A total of 531 tree nut OFCs were included. The mean age at OFC was 7.77 years (standard deviation, 4.33). Overall, 74.0% of children passed clinically indicated OFCs. Of the 4 most commonly challenged tree nuts, almost all patients passed OFC to almond (97.3%) and hazelnut (87.9%). Pass rates were lower for cashew (65.3%) and walnut (57.0%), P < .0001. The odds of failure were 0.83 times lower for patients who were avoiding without a previous reaction compared with those who had previously reacted (P = .0025). CONCLUSIONS The majority of patients pass low-risk almond and hazelnut OFCs. PPVs at the 50th percentile for walnut (2.84 kU/L) and cashew (3.35 kU/L) were lower than those previous studies have suggested.
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Affiliation(s)
- Cynhia Hsu
- Department of Medicine, Northwestern Feinberg School of Medicine, Chicago, Ill
| | - Meagan Yong
- Department of Medicine, Northwestern Feinberg School of Medicine, Chicago, Ill
| | - Jacob Pozin
- Department of Medicine, Northwestern Feinberg School of Medicine, Chicago, Ill
| | - Melanie Makhija
- Department of Pediatrics, Northwestern Feinberg School of Medicine and Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, Ill
| | - Anne Marie Singh
- Department of Medicine, Northwestern Feinberg School of Medicine, Chicago, Ill; Department of Pediatrics, University of Wisconsin-Madison, Madison, Wisc.
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31
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Brough HA, Gourgey R, Radulovic S, Caubet JC, Lack G, Anagnostou A. Latest Developments in the Management of Nut Allergies. CURRENT TREATMENT OPTIONS IN ALLERGY 2021; 8:97-110. [PMID: 34150446 PMCID: PMC8203721 DOI: 10.1007/s40521-021-00290-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Purpose of review In this review, we sought to describe the most recent advances in the dietary and medical management of peanut and tree nut allergy, including selective introduction and immunotherapy. Recent findings Dietary updates include changes to labeling laws, improved information sources, and new apps for buying foods in shops and overseas to better protect individuals with nut allergies. There are still issues in the management of nut allergies in schools, such as parents having to resort to packed lunches instead of school meals and patients experiencing bullying. Air travel also poses concern, but additional resources are now available to travelers, and recent evidence suggest limited airborne exposure to nuts. The medical management of anaphylaxis is use of epinephrine; however, this remains underutilized. Needle length and administration devices have been recently debated considering the risk of bone penetration vs subcutaneous administration, and autoinjectors seem to deliver higher peak concentrations than syringes. Selective nut introduction has gained momentum in the last 5 years, demonstrating improved quality of life but with the need for motivated parents for continued consumption and available resources for challenges. Immunotherapy to nuts is also a rapidly developing field, with the balance of efficacy and safety being important considerations in the differing modes of administration. Summary The management of nut allergies is a rapidly developing field, and dietary and medical management have progressed significantly in the last 5 years. Future research directions include improving safety and efficacy of food immunotherapy and examining patients’ goals for therapy and treatment outcomes.
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Affiliation(s)
- H A Brough
- Paediatric Allergy Group, Department Women and Children's Health, School of Life Course Sciences, King's College London, London, UK.,Paediatric Allergy Group, School of Immunology and Microbial Sciences, King's College London, London, UK.,Children's Allergy Service, Evelina Children's Hospital, Guy's and St. Thomas's NHS Foundation Trust, 2nd Floor, Stairwell B, South Wing, Westminster Bridge Rd, London, SE1 7EH UK
| | - R Gourgey
- Department of Paediatric Allergy, The Royal London Children's Hospital, Barts Health NHS Trust, E1 1FR, London, UK
| | - S Radulovic
- Paediatric Allergy Group, Department Women and Children's Health, School of Life Course Sciences, King's College London, London, UK.,Paediatric Allergy Group, School of Immunology and Microbial Sciences, King's College London, London, UK.,Children's Allergy Service, Evelina Children's Hospital, Guy's and St. Thomas's NHS Foundation Trust, 2nd Floor, Stairwell B, South Wing, Westminster Bridge Rd, London, SE1 7EH UK
| | - J C Caubet
- Pediatric Allergy Unit, University Hospitals of Geneva and University of Geneva, Rue Willy Donzé, Geneva, Switzerland
| | - G Lack
- Paediatric Allergy Group, Department Women and Children's Health, School of Life Course Sciences, King's College London, London, UK.,Paediatric Allergy Group, School of Immunology and Microbial Sciences, King's College London, London, UK.,Children's Allergy Service, Evelina Children's Hospital, Guy's and St. Thomas's NHS Foundation Trust, 2nd Floor, Stairwell B, South Wing, Westminster Bridge Rd, London, SE1 7EH UK
| | - A Anagnostou
- Section of Allergy, Immunology and Retrovirology, Baylor College of Medicine, Houston, TX USA.,Department of Pediatrics, Section of Allergy, Immunology and Retrovirology, Texas Children's Hospital, Houston, TX USA
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32
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Characterization of Relevant Biomarkers for the Diagnosis of Food Allergies: An Overview of the 2S Albumin Family. Foods 2021; 10:foods10061235. [PMID: 34072292 PMCID: PMC8228421 DOI: 10.3390/foods10061235] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 05/17/2021] [Accepted: 05/24/2021] [Indexed: 11/17/2022] Open
Abstract
2S albumins are relevant and often major allergens from several tree nuts and seeds, affecting mainly children and young people. The present study aims to assess how the structural features of 2S albumins could affect their immunogenic capacity, which is essential to comprehend the role of these proteins in food allergy. For this purpose, twelve 2S albumins were isolated from their respective extracts by chromatographic methods and identified by MALDI-TOF mass-spectrometry. Their molecular and structural characterization was conducted by electrophoretic, spectroscopic and in silico methods, showing that these are small proteins that comprise a wide range of isoelectric points, displaying a general high structure stability to thermal treatment. Despite low amino acid sequence identity, these proteins share structural features, pointing conformational epitopes to explain cross-reactivity between them. Immunoblotting with allergic patients’ sera revealed those possible correlations between evolutionarily distant 2S albumins from different sources. The availability of a well-characterized panel of 2S albumins from plant-derived sources allowed establishing correlations between their structural features and their allergenic potential, including their role in cross-reactivity processes.
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33
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Pi X, Yang Y, Sun Y, Cui Q, Wan Y, Fu G, Chen H, Cheng J. Recent advances in alleviating food allergenicity through fermentation. Crit Rev Food Sci Nutr 2021; 62:7255-7268. [PMID: 33951963 DOI: 10.1080/10408398.2021.1913093] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The increasing prevalence of food allergies is a significant challenge to global food health and safety. Various strategies have been deployed to decrease the allergenicity of food for preventing and reducing related disorders. Compared to other methods, fermentation has unique advantages in reducing the allergenicity of food and may represent a new trend in preventing food-induced allergies. This review introduces the characteristics of allergens in various foods, including shellfish, soy, peanut, milk, tree nut, egg, wheat, and fish. The mechanism and pathological symptoms of allergic reactions are then summarized. Furthermore, the advantages of fermentation for reducing the allergenicity of these foods and preventing allergies are evaluated. Fermentation is an efficient approach for reducing or eliminating food allergenicity. Simultaneously, it improved the nutritional value and physicochemical properties of food materials. It is conceivable that a combination of mixed strain fermentation with additional processing, such as heat treatment, pulsed light, and ultrasonication, will efficiently reduce the allergenicity of various foods and preserve their unique taste and nutritional components, providing significance for patients with allergies.
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Affiliation(s)
- Xiaowen Pi
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Yili Yang
- Suzhou Institute of Systems Medicine, Center for Systems Medicine, Chinese Academy of Medical Sciences, Suzhou, Jiangsu, China
| | - Yuxue Sun
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Qiang Cui
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Yin Wan
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Nanchang University, Nanchang, Jiangxi, China
| | - Guiming Fu
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Nanchang University, Nanchang, Jiangxi, China
| | - Hongbing Chen
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Nanchang University, Nanchang, Jiangxi, China
| | - Jianjun Cheng
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang, China
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Durban R, Groetch M, Meyer R, Coleman Collins S, Elverson W, Friebert A, Kabourek J, Marchand SM, McWilliam V, Netting M, Skypala I, Van Brennan T, Vassilopoulou E, Vlieg-Boerstra B, Venter C. Dietary Management of Food Allergy. Immunol Allergy Clin North Am 2021; 41:233-270. [PMID: 33863482 DOI: 10.1016/j.iac.2021.01.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Worldwide food allergy prevalence is increasing, especially in children. Food allergy management strategies include appropriate avoidance measures and identifying suitable alternatives for a nutritionally sound diet. Individualized dietary intervention begins teaching label reading, which differs among countries or regions. Dietary intervention must result in a nutritionally sound plan including alternatives to support optimal growth and development. Inappropriate or incomplete dietary advice may increase the risk of adverse reactions, growth faltering, and nutrient deficiencies. Evidence indicates input from a registered dietitian improves nutritional outcomes. Nutritional input plays a critical role managing nutritional disorders related to food allergy.
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Affiliation(s)
- Raquel Durban
- Carolina Asthma & Allergy Center, 2600 E 7th St unit a, Charlotte, NC 28204, USA
| | - Marion Groetch
- Division of Allergy & Immunology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, Box 1198, New York, NY 10029, USA
| | - Rosan Meyer
- Department of Pediatrics, Imperial College, London, UK
| | | | - Wendy Elverson
- Boston Children's Hospital Center for Nutrition, 333 Longwood Avenue, 4th floor, Boston, MA 02115, USA
| | - Alyssa Friebert
- Allergy and Immunology Clinic, 13123 East 16th Avenue Box 270, Aurora, CO 80045, USA
| | - Jamie Kabourek
- University of Nebraska-Lincoln, Food Innovation Center, Room 279c, 1901 North 21 Street, Lincoln, NE 68588, USA
| | - Stephanie M Marchand
- Department of Pediatrics, The Warren Alpert School of Medicine at Brown University, 593 Eddy Street, Providence, RI 02903, USA; Food and Nutrition Services, Hasbro Children's Hospital, 593 Eddy Street, Providence, RI 02903, USA
| | - Vicki McWilliam
- Department of Allergy and Immunology, Royal Children's Hospital, Melbourne, Australia; Murdoch Children's Research Institute, Melbourne, Australia
| | - Merryn Netting
- Women and Kids Theme, South Australian Health and Medical Research Institute, 72 King William Road, North Adelaide, South Australia 5006, Australia; Department of Pediatrics, University of Adelaide, Adelaide, South Australia, Australia; Nurition Department, Women's and Children's Health Network, North Adelaide 5006, South Australia, Australia
| | - Isabel Skypala
- Imperial College, London, UK; Department of Allergy and Clinical Immunology, Royal Brompton & Harefield NHS Foundation Trust, Royal Brompton Hospital, 4th Floor Fulham Wing, Sydney Street, London SW3 6NP, UK
| | - Taryn Van Brennan
- Children's Hospital of Colorado, 13123 East 16th Avenue Box B518 Anschutz Medical Campus, Aurora CO 80045, USA
| | - Emillia Vassilopoulou
- Department of Nutritional Sciences and Dietetics, International Hellenic University, Thessaloniki 57400, Greece
| | - Berber Vlieg-Boerstra
- Department of Pediatrics, OLVG Hospital, PO Box 95500, Amsterdam 1090HM, The Netherlands
| | - Carina Venter
- Children's Hospital of Colorado, 13123 East 16th Avenue Box B518 Anschutz Medical Campus, Aurora CO 80045, USA.
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Lieberman JA, Gupta RS, Knibb RC, Haselkorn T, Tilles S, Mack DP, Pouessel G. The global burden of illness of peanut allergy: A comprehensive literature review. Allergy 2021; 76:1367-1384. [PMID: 33216994 PMCID: PMC8247890 DOI: 10.1111/all.14666] [Citation(s) in RCA: 68] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 10/30/2020] [Accepted: 11/14/2020] [Indexed: 01/05/2023]
Abstract
Peanut allergy (PA) currently affects approximately 2% of the general population of Western nations and may be increasing in prevalence. Patients with PA and their families/caregivers bear a considerable burden of self‐management to avoid accidental peanut exposure and to administer emergency medication (adrenaline) if needed. Compared with other food allergies, PA is associated with higher rates of accidental exposure, severe reactions and potentially fatal anaphylaxis. Approximately 7%–14% of patients with PA experience accidental peanut exposure annually, and one‐third to one‐half may experience anaphylaxis, although fatalities are rare. These risks impose considerably high healthcare utilization and economic costs for patients with PA and restrictions on daily activities. Measures to accommodate patients with PA are often inadequate, with inconsistent standards for food labelling and inadequate safety policies in public establishments such as restaurants and schools. Children with PA are often bullied, resulting in sadness, humiliation and anxiety. These factors cumulatively contribute to significantly reduced health‐related quality of life for patients with PA and families/caregivers. Such factors also provide essential context for risk/benefit assessments of new PA therapies. This narrative review comprehensively assessed the various factors comprising the burden of PA.
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Affiliation(s)
- Jay A. Lieberman
- University of Tennessee Health Science Center/Le Bonheur Children’s Hospital Memphis TN USA
| | - Ruchi S Gupta
- Institute for Public Health and Medicine Ann & Robert H. Lurie Children's Hospital of ChicagoNorthwestern School of Medicine Chicago IL USA
| | | | | | | | - Douglas P. Mack
- Department of Pediatrics McMaster University Hamilton ON Canada
| | - Guillaume Pouessel
- Pneumology and Allergology Unit Children's HospitalLille University Hospital Jeanne de Flandre France
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Guarnieri KM, Slack IF, Gadoury-Lévesque V, Eapen AA, Andorf S, Lierl MB. Peanut oral immunotherapy in a pediatric allergy clinic: Patient factors associated with clinical outcomes. Ann Allergy Asthma Immunol 2021; 127:214-222.e4. [PMID: 33839246 DOI: 10.1016/j.anai.2021.04.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 03/26/2021] [Accepted: 04/01/2021] [Indexed: 11/27/2022]
Abstract
BACKGROUND Additional information is needed to inform optimal patient selection, expected outcomes, and treatment end points for clinical peanut oral immunotherapy (OIT). OBJECTIVE To provide insight into the optimal patient selection, expected outcomes, and treatment end points for clinical peanut oral immunotherapy by analyzing a real-world peanut OIT cohort. METHODS Records were reviewed for 174 children undergoing peanut OIT at a pediatric allergy clinic. Patient age, peanut skin prick test results, and peanut-specific immunoglobulin E (sIgE) results, with inclusion of additional foods in OIT, were analyzed for correlations with OIT outcomes. RESULTS To date, 144 patients have achieved maintenance dosing, 50 of whom transitioned to ad lib twice-weekly peanut ingestion. A total of 30 discontinued OIT. In addition, 47 patients who underwent multifood OIT had no significant difference in reactions (FDR-adjusted P = .48) or time-to-reach maintenance (FDR-adjusted P = .48) compared with those on peanut OIT alone. Age at initiation inversely correlated with achievement of maintenance: 92% of patients 0.5 to less than 5 years, 81% of those 5 to less than 11 years, and 70% of those 11 to less than 18 years reached and continued maintenance (P = .01). Baseline peanut-sIgE level positively correlated with number of reactions during updosing (P < .001) and maintenance (P = .005), though it was not significantly different in patients achieving successful maintenance vs those who discontinued OIT (P = .09). Furthermore, 66% of patients experienced greater than or equal to 1 adverse reaction during OIT. Of those on ad lib peanut ingestion, 2 reported mild reactions after lapses in peanut consumption. CONCLUSION Clinical peanut OIT has similar outcomes to research protocols. OIT can be successful in older children and those with high peanut-sIgE levels, though these factors affect outcomes. Clinical and laboratory criteria can guide successful transition to intermittent ad lib peanut consumption.
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Affiliation(s)
- Katharine M Guarnieri
- Division of Allergy and Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Ian F Slack
- Division of Allergy and Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Vanessa Gadoury-Lévesque
- Division of Allergy and Clinical Immunology, Department of Pediatrics, Montreal Children's Hospital, McGill University, Montreal, Canada
| | - Amy A Eapen
- Division of Allergy and Clinical Immunology, Department of Medicine, Henry Ford Health System, Detroit, Michigan
| | - Sandra Andorf
- Division of Allergy and Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio; Division of Biomedical Informatics, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Michelle B Lierl
- Division of Allergy and Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio.
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Puente-Lelievre C, Eischeid AC. Development and validation of a duplex real-time PCR assay with locked nucleic acid (LNA) probes for the specific detection of allergenic walnut in complex food matrices. Food Control 2021. [DOI: 10.1016/j.foodcont.2020.107644] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Caffarelli C, Mastrorilli C, Santoro A, Criscione M, Procaccianti M. Component-Resolved Diagnosis of Hazelnut Allergy in Children. Nutrients 2021; 13:nu13020640. [PMID: 33669377 PMCID: PMC7920284 DOI: 10.3390/nu13020640] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 02/05/2021] [Accepted: 02/10/2021] [Indexed: 01/03/2023] Open
Abstract
Hazelnuts commonly elicit allergic reactions starting from childhood and adolescence, with a rare resolution over time. The definite diagnosis of a hazelnut allergy relies on an oral food challenge. The role of component resolved diagnostics in reducing the need for oral food challenges in the diagnosis of hazelnut allergies is still debated. Therefore, three electronic databases were systematically searched for studies on the diagnostic accuracy of specific-IgE (sIgE) on hazelnut proteins for identifying children with a hazelnut allergy. Studies regarding IgE testing on at least one hazelnut allergen component in children whose final diagnosis was determined by oral food challenges or a suggestive history of serious symptoms due to a hazelnut allergy were included. Study quality was assessed by the Quality Assessment of Diagnostic Accuracy Studies-2 tool. Eight studies enrolling 757 children, were identified. Overall, sensitivity, specificity, area under the curve and diagnostic odd ratio of Cor a 1 sIgE were lower than those of Cor a 9 and Cor a 14 sIge. When the test results were positive, the post-test probability of a hazelnut allergy was 34% for Cor a 1 sIgE, 60% for Cor a9 sIgE and 73% for Cor a 14 sIgE. When the test results were negative, the post-test probability of a hazelnut allergy was 55% for Cor a 1 sIgE, 16% for Cor a9 sIgE and 14% for Cor a 14 sIgE. Measurement of IgE levels to Cor a 9 and Cor a 14 might have the potential to improve specificity in detecting clinically tolerant children among hazelnut-sensitized ones, reducing the need to perform oral food challenges.
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Affiliation(s)
- Carlo Caffarelli
- Clinica Pediatrica, Dipartimento di Medicina e Chirurgia, Università di Parma, Azienda Ospedaliero-Universitaria di Parma, 43126 Parma, Italy; (A.S.); (M.P.)
- Correspondence: ; Tel.: +39-0521-7022-07
| | - Carla Mastrorilli
- UO Pediatria e Pronto Soccorso, Azienda Ospedaliero-Universitaria Consorziale Policlinico, Ospedale Pediatrico Giovanni XXIII, 70126 Bari, Italy;
| | - Angelica Santoro
- Clinica Pediatrica, Dipartimento di Medicina e Chirurgia, Università di Parma, Azienda Ospedaliero-Universitaria di Parma, 43126 Parma, Italy; (A.S.); (M.P.)
| | - Massimo Criscione
- Dipartimento di Medicina e Chirurgia, Università di Parma, Azienda Ospedaliero-Universitaria di Parma, 43126 Parma, Italy;
| | - Michela Procaccianti
- Clinica Pediatrica, Dipartimento di Medicina e Chirurgia, Università di Parma, Azienda Ospedaliero-Universitaria di Parma, 43126 Parma, Italy; (A.S.); (M.P.)
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Foong RX, Santos AF. Biomarkers of diagnosis and resolution of food allergy. Pediatr Allergy Immunol 2021; 32:223-233. [PMID: 33020989 DOI: 10.1111/pai.13389] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 08/30/2020] [Accepted: 09/25/2020] [Indexed: 12/19/2022]
Abstract
Food allergy is increasing in prevalence, affecting up to 10% of children in developed countries. Food allergy can significantly affect the quality of life and well-being of patients and their families; therefore, an accurate diagnosis is of extreme importance. Some food allergies can spontaneously resolve in 50%-60% of cow's milk and egg-allergic, 20% of peanut-allergic and 9% of tree nut-allergic children by school age. For that reason, food-allergic status should be monitored over time to determine when to reintroduce the food back into the child's diet. The gold-standard to confirm the diagnosis and the resolution of food allergy is an oral food challenge; however, this involves the risk of causing an acute-allergic reaction and requires clinical experience and resources to treat allergic reactions of any degree of severity. In the clinical setting, biomarkers have been used and validated to enable an accurate diagnosis when combined with the clinical history, deferring the oral food challenge, whenever possible. In this review, we cover the tools available to support the diagnosis of food allergies and to predict food allergy resolution over time. We review the latest evidence on different testing modalities and how effective they are in guiding clinical decision making in practice. We also evaluate predictive test cut-offs for the more common food allergens to try and provide guidance on when challenges might be most successful in determining oral tolerance in children.
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Affiliation(s)
- Ru-Xin Foong
- Department of Women and Children's Health (Paediatric Allergy), School of Life Course Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK.,Children's Allergy Service, Guy's and St. Thomas' NHS Foundation Trust, London, UK
| | - Alexandra F Santos
- Department of Women and Children's Health (Paediatric Allergy), School of Life Course Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK.,Children's Allergy Service, Guy's and St. Thomas' NHS Foundation Trust, London, UK.,Peter Gorer Department of Immunobiology, School of Immunology and Microbial Sciences, King's College London, London, UK.,Asthma UK Centre for Allergic Mechanisms of Asthma, London, UK
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40
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Midun E, Radulovic S, Brough H, Caubet JC. Recent advances in the management of nut allergy. World Allergy Organ J 2021; 14:100491. [PMID: 33510829 PMCID: PMC7811165 DOI: 10.1016/j.waojou.2020.100491] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 11/02/2020] [Accepted: 11/03/2020] [Indexed: 11/25/2022] Open
Abstract
Peanut/tree nut allergy is common and has been associated with particularly severe reactions. Epidemiological data have shown that the prevalence ranges between 0.05% and 4.9% for tree nut and between 0.5% and 3% for peanut. These large variations can be explained by differences in the age of included patients and the geographical region. In addition, the food consumption modality (ie, raw versus roasted) plays a major role, as heat treatment has the capacity to modify the allergenicity of nuts and legumes. Nut allergies tend to persist into adulthood and consequently have a high impact on quality of life. Recently, it has been demonstrated that a significant proportion of nut allergic patients are able to tolerate other nuts. As opposed to the avoidance of all nuts, this approach is currently proposed in several tertiary allergy centers. However, diagnosis of nut allergy is particularly difficult due to co-sensitization leading to high rate of false positive skin prick tests and/or specific IgE to whole allergen extracts. The use of component resolved diagnosis leads to major improvement of diagnosis, particularly to distinguish between primary and secondary nut allergies. The basophil activation test has been suggested to be useful but is still used mainly as a research tool. Thus, diagnosis remains mainly based on the oral food challenge, which is considered as the gold standard. Regarding treatment, avoidance remains the cornerstone of management of nut allergy. Oral immunotherapy is increasingly proposed as an alternative management strategy.
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Key Words
- Component-resolved diagnostic, CRD
- Cross reactivity
- Double-blind, placebo-controlled, food challenge, DBPCFC
- Food allergy
- Lipid transfer protein, LTP
- Oral allergy syndrome, OAS
- Oral food challenge, OFC
- Oral immunotherapy
- Oral induction tolerance, OIT
- Pathogenesis related protein type 10, PR-10
- Peanut
- Platelet-activating factor, PAF
- Pollen-food syndrome, PFS
- Precautionary Allergen Labels, (PAL)
- Skin prick test, SPT
- Tree nut
- Tree nut, TN
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Affiliation(s)
- Elise Midun
- Pediatric Allergy Unit, University Hospitals of Geneva and University of Geneva, Rue Willy Donzé 6, 1205 Geneva, Switzerland, University Lyon 1 Claude Bernard, 43 Boulevard Du 11-Novembre-1918, 69100, Villeurbanne, France
- Corresponding author.
| | - Suzana Radulovic
- Paediatric Allergy Group, Department of Women and Children's Health, King's College London, London, United Kingdom, Paediatric Allergy Group, Peter Gorer Dept of Immunobiology, School of Immunology & Microbial Sciences, King's College London, Guys' Hospital, London, United Kingdom, Children's Allergy Service, Evelina Children's Hospital, Guy's and St. Thomas' Hospital NHS Foundation Trust, London, United Kingdom
| | - Helen Brough
- Paediatric Allergy Group, Department of Women and Children's Health, King's College London, London, United Kingdom, Paediatric Allergy Group, Peter Gorer Dept of Immunobiology, School of Immunology & Microbial Sciences, King's College London, Guys' Hospital, London, United Kingdom, Children's Allergy Service, Evelina Children's Hospital, Guy's and St. Thomas' Hospital NHS Foundation Trust, London, United Kingdom
| | - Jean-Christoph Caubet
- Pediatric Allergy Unit, University Hospitals of Geneva and University of Geneva, Rue Willy Donzé 6, 1205, Geneva, Switzerland
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Hazelnut Allergy. ACTA ACUST UNITED AC 2021; 57:medicina57010067. [PMID: 33466577 PMCID: PMC7828647 DOI: 10.3390/medicina57010067] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 01/08/2021] [Accepted: 01/10/2021] [Indexed: 01/14/2023]
Abstract
Background and Objectives: Hazelnuts are frequently involved in IgE-mediated reactions and represent the main culprit of nut allergy in Europe. The clinical presentation varies from mild symptoms limited to the oropharynx [oral allergy syndrome (OAS)], due to the cross-reaction with homologues in pollen allergens and more severe events caused by the primary sensitization to highly stable molecules contained in hazelnuts. The aim of this review is to summarize the most relevant concepts in the field of hazelnut allergy and to provide a practical approach useful in the clinical practice Materials and Methods: References were identified by PubMed searches dating from January 2000 up to November 2020 using the search terms: “component resolved diagnosis” and “Hazelnut allergy. Results: The storage proteins Cor a 9 and Cor a 14 resulted highly specific for primary hazelnut allergy and strongly associated with severe reactions, while the cross reactive Cor a 1, an homolog of the birch Bet v1, were related to OAS. Any cut-off has shown a specificity and sensitivity pattern as high as to replace the oral food challenge (OFC), which still remains the gold standard in the diagnosis of hazelnut allergy. To date there is still no definitive treatment. Hazelnut free-diet and treatment of symptoms with emergency management, including the prescription of auto-injective epinephrine, still represent the main approach. Oral allergen immunotherapy (AIT) appears a promising therapeutic strategy and the definition of individual clinical threshold would be useful for sensitized individuals, caregivers, and physicians to reduce social limitation, anxiety, and better manage food allergy. Conclusions: An accurate diagnostic work-up including clinical history, in vivo and in vitro test including component resolved diagnosis and OFC are essential to confirm the diagnosis, to assess the risk of a severe reaction, and to prescribe an adequate diet and treatment.
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The Effect of Nut Consumption on Diet Quality, Cardiometabolic and Gastrointestinal Health in Children: A Systematic Review of Randomized Controlled Trials. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18020454. [PMID: 33430029 PMCID: PMC7827804 DOI: 10.3390/ijerph18020454] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 12/22/2020] [Accepted: 12/28/2020] [Indexed: 12/25/2022]
Abstract
Tree nuts and ground nuts are nutrient-rich foods known to improve human health when consumed regularly in the diet. Past observational studies suggest that nuts improve adult and child health; however, limited randomized control trials (RCTs) have assessed the health effects of nuts in children. Using a systematic review approach, we examined the effect of nut intake on health outcomes in children aged 8–18 years. We searched PubMed, Scopus, Web of Science, EMBASE and Cochrane library to identify RCTs of interest. A total of 5783 articles were identified, 4821 were screened by title and abstract and 37 by full text resulting in four articles that met the inclusion criteria for the review. Nut consumption was between 15 and 30 g with durations of between 3 and 16 weeks. Nut consumption was shown to improve children’s diet quality (increase children’s intake of essential nutrients including fats (monounsaturated and polyunsaturated fats), protein and fiber), there were inconsistent effects on biomarkers of cardiometabolic health (improve lipid profiles, microvascular reactivity and inflammation) and gastrointestinal health (increase in the proportion of beneficial fecal bacteria). Further studies exploring the broad health benefits of nuts in children are needed with consideration given to higher doses and longer intervention periods.
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43
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Adverse Skin Reactions to Plants and Plant Products. Contact Dermatitis 2021. [DOI: 10.1007/978-3-030-36335-2_88] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Karimi Z, Firouzi M, Dadmehr M, Javad‐Mousavi SA, Bagheriani N, Sadeghpour O. Almond as a nutraceutical and therapeutic agent in Persian medicine and modern phytotherapy: A narrative review. Phytother Res 2020; 35:2997-3012. [DOI: 10.1002/ptr.7006] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Revised: 11/29/2020] [Accepted: 12/15/2020] [Indexed: 12/18/2022]
Affiliation(s)
- Zahra Karimi
- Research Institute for Islamic and Complementary Medicine Iran University of Medical Sciences Tehran Iran
- School of Persian Medicine Iran University of Medical Sciences Tehran Iran
| | - Mojdeh Firouzi
- Research Institute for Islamic and Complementary Medicine Iran University of Medical Sciences Tehran Iran
- School of Persian Medicine Iran University of Medical Sciences Tehran Iran
| | - Majid Dadmehr
- Research Institute for Islamic and Complementary Medicine Iran University of Medical Sciences Tehran Iran
- School of Persian Medicine Iran University of Medical Sciences Tehran Iran
| | - Seyed Ali Javad‐Mousavi
- Department of Internal Medicine School of Medicine, Iran University of Medical Sciences Tehran Iran
| | - Najmeh Bagheriani
- Research Institute for Islamic and Complementary Medicine Iran University of Medical Sciences Tehran Iran
- School of Persian Medicine Iran University of Medical Sciences Tehran Iran
| | - Omid Sadeghpour
- Research Institute for Islamic and Complementary Medicine Iran University of Medical Sciences Tehran Iran
- School of Persian Medicine Iran University of Medical Sciences Tehran Iran
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Neale EP, Tran G, Brown RC. Barriers and Facilitators to Nut Consumption: A Narrative Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17239127. [PMID: 33297407 PMCID: PMC7729435 DOI: 10.3390/ijerph17239127] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 11/25/2020] [Accepted: 12/01/2020] [Indexed: 01/17/2023]
Abstract
Habitual nut intake is associated with a range of health benefits; however, population consumption data suggests that most individuals do not meet current recommendations for nut intake. The literature has highlighted a range of barriers and facilitators to nut consumption, which should be considered when designing strategies to promote nut intake. Common barriers include confusion regarding the effects of nut consumption on body weight, perceptions that nuts are high in fat, or too expensive, and challenges due to dentition issues or nut allergies. Conversely, demographic characteristics such as higher education and income level, and a healthier lifestyle overall, are associated with higher nut intakes. Health professionals appear to play an important role in promoting nut intake; however, research suggests that knowledge of the benefits of nut consumption could be improved in many health professions. Future strategies to increase nut intake to meet public health recommendations must clarify misconceptions of the specific benefits of nut consumption, specifically targeting sectors of the population known to have lower nut consumption, and educate health professionals to promote nut intake. In addition, given the relatively small body of evidence exploring barriers and facilitators to nut consumption, further research exploring these factors is justified.
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Affiliation(s)
- Elizabeth P. Neale
- School of Medicine, University of Wollongong, Wollongong, NSW 2522, Australia;
- Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, NSW 2522, Australia
- Correspondence:
| | - Georgie Tran
- School of Medicine, University of Wollongong, Wollongong, NSW 2522, Australia;
| | - Rachel C. Brown
- Department of Human Nutrition, University of Otago, Dunedin 9016, Otago, New Zealand;
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Suther C, Moore MD, Beigelman A, Zhou Y. The Gut Microbiome and the Big Eight. Nutrients 2020; 12:nu12123728. [PMID: 33287179 PMCID: PMC7761723 DOI: 10.3390/nu12123728] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 11/28/2020] [Accepted: 12/01/2020] [Indexed: 12/11/2022] Open
Abstract
Food allergies are increasing at an alarming rate, with 6.5% of the general population affected. It has been hypothesized that the increase in allergies stems from the “hygiene hypothesis”. The gut microbiome, a collection of microbiota and their genetic contents from the gastrointestinal tract, has been shown to play a part in the development of food allergies. The Food and Drug Administration requires all regulated food companies to clearly state an inclusion of the major, or “big eight” food allergens on packaging. This review is to provide information on the significant advancements related to the gut microbiome and each of the eight major food allergies individually. Establishment of causal connection between the microbiome and food allergies has uncovered novel mechanisms. New strategies are discussed to prevent future sensitization and reaction through novel treatments involving functional additives and dietary changes that target the microbiome.
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Affiliation(s)
- Cassandra Suther
- Department of Food Science, University of Massachusetts, Amherst, MA 01003, USA; (C.S.); (M.D.M.)
- Department of Medicine, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - Matthew D. Moore
- Department of Food Science, University of Massachusetts, Amherst, MA 01003, USA; (C.S.); (M.D.M.)
| | - Avraham Beigelman
- Kipper Institute of Allergy and Immunology, Schneider Children’s Medical Center, Tel Aviv University, Tel Aviv 5891000, Israel;
| | - Yanjiao Zhou
- Department of Medicine, University of Connecticut Health Center, Farmington, CT 06030, USA
- Correspondence: ; Tel.: +1-860-679-6379
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Sena-Torralba A, Pallás-Tamarit Y, Morais S, Maquieira Á. Recent advances and challenges in food-borne allergen detection. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.116050] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Bastiaan-Net S, Batstra MR, Aazamy N, Savelkoul HFJ, van der Valk JPM, Gerth van Wijk R, Schreurs MWJ, Wichers HJ, de Jong NW. IgE cross-reactivity measurement of cashew nut, hazelnut and peanut using a novel IMMULITE inhibition method. Clin Chem Lab Med 2020; 58:1875-1883. [PMID: 32083439 DOI: 10.1515/cclm-2019-1083] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 01/10/2020] [Indexed: 12/22/2022]
Abstract
Background Tree nut-allergic individuals are often sensitised towards multiple nuts and seeds. The underlying cause behind a multi-sensitisation for cashew nut, hazelnut, peanut and birch pollen is not always clear. We investigated whether immunoglobulin E antibody (IgE) cross-reactivity between cashew nut, hazelnut and peanut proteins exists in children who are multi-allergic to these foods using a novel IMMULITE®-based inhibition methodology, and investigated which allergens might be responsible. In addition, we explored if an allergy to birch pollen might play a role in this co-sensitisation for cashew nut, hazelnut and peanut. Methods Serum of five children with a confirmed cashew nut allergy and suffering from allergic symptoms after eating peanut and hazelnut were subjected to inhibition immunoassays using the IMMULITE® 2000 XPi. Serum-specific IgE (sIgE) to seed storage allergens and pathogenesis-related protein 10 (PR10) allergens were determined and used for molecular multicomponent allergen correlation analyses with observed clinical symptoms and obtained inhibition data. Results IgE cross-reactivity was observed in all patients. Hazelnut extract was a strong inhibitor of cashew nut sIgE (46.8%), while cashew nut extract was less able to inhibit hazelnut extract (22.8%). Peanut extract showed the least inhibition potency. Moreover, there are strong indications that a birch pollen sensitisation to Bet v 1 might play a role in the observed symptoms provoked upon ingestion of cashew nut and hazelnut. Conclusions By applying an adjusted working protocol, the IMMULITE® technology can be used to perform inhibition assays to determine the risk of sIgE cross-reactivity between very different food components.
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Affiliation(s)
- Shanna Bastiaan-Net
- Wageningen Food and Biobased Research, Wageningen University and Research, Wageningen, The Netherlands
| | - Manou R Batstra
- Medische Immunologie, Reinier de Graaf Gasthuis, Delft, The Netherlands
| | - Nasrin Aazamy
- Department of Internal Medicine, Section of Allergy and Clinical Immunology, Erasmus MC, Rotterdam, The Netherlands
| | - Huub F J Savelkoul
- Cell Biology and Immunology Group, Wageningen University, Wageningen, The Netherlands
| | - Johanna P M van der Valk
- Department of Internal Medicine, Section of Allergy and Clinical Immunology, Erasmus MC, Rotterdam, The Netherlands.,Department of Pulmonary Medicine, Franciscus Gasthuis and Vlietland, Rotterdam, The Netherlands
| | - Roy Gerth van Wijk
- Department of Internal Medicine, Section of Allergy and Clinical Immunology, Erasmus MC, Rotterdam, The Netherlands
| | - Marco W J Schreurs
- Department of Immunology, Laboratory Medical Immunology, Erasmus MC, Rotterdam, The Netherlands
| | - Harry J Wichers
- Wageningen Food and Biobased Research, Wageningen University and Research, Wageningen, The Netherlands.,Food Chemistry, Wageningen University, Wageningen, The Netherlands
| | - Nicolette W de Jong
- Department of Internal Medicine, Section of Allergy and Clinical Immunology, Erasmus MC, Rotterdam, The Netherlands
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Francis OL, Wang KY, Kim EH, Moran TP. Common food allergens and cross-reactivity. JOURNAL OF FOOD ALLERGY 2020; 2:17-21. [PMID: 39022146 PMCID: PMC11250430 DOI: 10.2500/jfa.2020.2.200020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 07/20/2024]
Abstract
The most clinically relevant food allergens are cow's milk, hen's egg, peanut, tree nuts, wheat, soy, fish, shellfish, and seeds. Heat-stable food allergens have molecular characteristics that enhance protein stability and gastrointestinal absorption and thus are more likely to cause systemic reactions on ingestion. In contrast, heat-labile food allergens lack these characteristics and do not typically elicit reactions if sufficiently altered by heat or acid. Immunologic cross-sensitization between food allergens is more common than clinical cross-reactivity. However, certain groups of food allergens, such as tree nuts, fish, and shellfish, are associated with high rates of clinical cross-reactivity. Knowing the rates of clinical cross-reactivity is important when providing guidance to patients with food allergy and families on what foods can be safely added to the diet and what foods should be avoided.
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Affiliation(s)
- Olivia L. Francis
- From the Division of Pediatric Allergy, Immunology & Rheumatology, Department of Pediatrics, and
| | - Kathleen Y. Wang
- From the Division of Pediatric Allergy, Immunology & Rheumatology, Department of Pediatrics, and
| | - Edwin H. Kim
- Division of Rheumatology, Allergy and Immunology, Department of Medicine, University of North Carolina School of Medicine, Chapel Hill, North
| | - Timothy P. Moran
- From the Division of Pediatric Allergy, Immunology & Rheumatology, Department of Pediatrics, and
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50
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Di Stasio L, d'Acierno A, Picariello G, Ferranti P, Nitride C, Mamone G. In vitro gastroduodenal and jejunal brush border membrane digestion of raw and roasted tree nuts. Food Res Int 2020; 136:109597. [PMID: 32846622 DOI: 10.1016/j.foodres.2020.109597] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 07/22/2020] [Accepted: 07/23/2020] [Indexed: 10/23/2022]
Abstract
Heat treatments induce chemical/physical modifications, which may affect the stability to enzymatic digestion and consequently the allergenicity of food proteins to a varying extent, depending on the time/temperature regimen. Herein, we evaluated the stability to digestion of whole tree nut (walnuts, hazelnuts and almonds) allergens in a food digestion model reflecting the real one by, taking into consideration the allergen-containing processed (roasted) food. To this aim, whole raw and roasted tree nuts were subjected to in vitro digestion combining the harmonized oral-gastric-duodenal digestion models with brush border membrane enzymes (BBM) to simulate the jejunal degradation of peptides. The degradation of allergens was monitored by integrated proteomic/peptidomic and bio-informatic tools. Roasting increased digestibility of tree nuts, since very few peptides were detected in digested samples (<6.5 kDa fraction). After BBM digestion step, the degradation of peptides was enhanced in roasted walnuts and hazelnuts compared to the raw counterpart. Conversely, almond allergens showed a different behaviour, since the presence of resistant peptides was more evident for roasted almonds, probably because of the hydrolysis of high molecular weight aggregates generated during roasting. Our results provide new insight into the relationship between thermal processing and metabolic fate of tree nut allergens, highlighting the importance of investigating the digestion stability of whole allergenic food, rather than purified proteins.
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Affiliation(s)
- Luigia Di Stasio
- Institute of Food Sciences - National Research Council, Avellino, Italy; Department of Agriculture - University of Naples - Federico II, Portici (NA), Italy
| | - Antonio d'Acierno
- Institute of Food Sciences - National Research Council, Avellino, Italy
| | | | - Pasquale Ferranti
- Department of Agriculture - University of Naples - Federico II, Portici (NA), Italy
| | - Chiara Nitride
- Department of Agriculture - University of Naples - Federico II, Portici (NA), Italy
| | - Gianfranco Mamone
- Institute of Food Sciences - National Research Council, Avellino, Italy.
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