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Vandekerckhove M, Van Droogenbroeck B, De Loose M, Coudijzer K, Coppens M, Gevaert P, Lapeere H. Development and validation of a standardized double-blind, placebo-controlled food challenge matrix for raw hazelnuts. Clin Transl Allergy 2018; 8:3. [PMID: 29416847 PMCID: PMC5785854 DOI: 10.1186/s13601-017-0181-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Accepted: 11/20/2017] [Indexed: 11/20/2022] Open
Abstract
Background Double-blind, placebo-controlled food challenge (DBPCFC) is considered the gold standard for food allergy diagnosis. However, this test is rarely performed routinely in clinical practice because of various practical issues, e.g. the lack of a standardized matrix preparation. The aim of this study was to develop and validate a convenient DBPCFC matrix, that can easily be implemented in daily clinical practice. The focus of this study was the blinding of hazelnuts, whereby the hazelnuts retained as much as possible their allergenicity and could be mixed homogenously in low-doses to the matrices. Methods A basophil-activation test (BAT), microbial tests and an LC-MS/MS test were performed to assess respectively the allergenicity of the used hazelnuts, the microbial stability of the novel developed matrices and the homogeneity of the hazelnuts in the matrices. A sensory test was conducted to validate the blinding of the hazelnuts in the matrices. A pilot DBPCFC study included eight patients as proof of concept. Results The BAT-test gave the first insights concerning the retained allergenicity of the hazelnuts. The microbial safety could be assured after 12 months of storage. Sufficient masking was assessed by several sensory tests. Homogeneous hazelnut distribution could be achieved for the different hazelnut concentrations. The DBPCFC’s results showed diverse allergic responders (from no reactions to distinct objective symptoms). Conclusion A novel stable and validated DBPCFC matrix using raw hazelnuts has been developed that allows easy preparation in a standardized way for convenient use in daily clinical practice. Trial registration EC Project number: EC/2015/0852; Date of registration: 13 Oct 2015; End date: 01 Feb 2017 Electronic supplementary material The online version of this article (10.1186/s13601-017-0181-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Marjolein Vandekerckhove
- 1Technology and Food Science Unit, Research Institute for Agriculture, Fisheries, and Food (ILVO), Burg. Van Gansberghelaan 115, 9820 Merelbeke, Belgium
| | - Bart Van Droogenbroeck
- 1Technology and Food Science Unit, Research Institute for Agriculture, Fisheries, and Food (ILVO), Burg. Van Gansberghelaan 115, 9820 Merelbeke, Belgium
| | - Marc De Loose
- 1Technology and Food Science Unit, Research Institute for Agriculture, Fisheries, and Food (ILVO), Burg. Van Gansberghelaan 115, 9820 Merelbeke, Belgium
| | - Katleen Coudijzer
- 1Technology and Food Science Unit, Research Institute for Agriculture, Fisheries, and Food (ILVO), Burg. Van Gansberghelaan 115, 9820 Merelbeke, Belgium
| | - Marc Coppens
- 3Faculty of Medicine and Health Science, Department of Anesthesiology and Perioperative Medicine, Ghent University, De Pintelaan 185, 9000 Ghent, Belgium
| | - Philippe Gevaert
- 4Faculty of Medicine and Health Science, Department of Otorhinolaryngology, Ghent University, De Pintelaan 185, 9000 Ghent, Belgium
| | - Hilde Lapeere
- 2Faculty of Medicine and Health Science, Department of Dermatology, Ghent University, De Pintelaan 185, 9000 Ghent, Belgium
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Johnson PE, Sayers RL, Gethings LA, Balasundaram A, Marsh JT, Langridge JI, Mills ENC. Quantitative Proteomic Profiling of Peanut Allergens in Food Ingredients Used for Oral Food Challenges. Anal Chem 2016; 88:5689-95. [DOI: 10.1021/acs.analchem.5b04466] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Philip E. Johnson
- Manchester
Institute of Biotechnology, Institute of Inflammation and Repair,
Manchester Academic Health Sciences Centre, University of Manchester, Manchester, United Kingdom M17DN
| | - Rebekah L. Sayers
- Manchester
Institute of Biotechnology, Institute of Inflammation and Repair,
Manchester Academic Health Sciences Centre, University of Manchester, Manchester, United Kingdom M17DN
| | - Lee A. Gethings
- Waters
Corporation, Stamford Avenue, Altrincham
Road, Wilmslow, United Kingdom SK9 4AX
| | - Anuradha Balasundaram
- Manchester
Institute of Biotechnology, Institute of Inflammation and Repair,
Manchester Academic Health Sciences Centre, University of Manchester, Manchester, United Kingdom M17DN
| | - Justin T. Marsh
- Manchester
Institute of Biotechnology, Institute of Inflammation and Repair,
Manchester Academic Health Sciences Centre, University of Manchester, Manchester, United Kingdom M17DN
| | - James I. Langridge
- Waters
Corporation, Stamford Avenue, Altrincham
Road, Wilmslow, United Kingdom SK9 4AX
| | - E. N. Clare Mills
- Manchester
Institute of Biotechnology, Institute of Inflammation and Repair,
Manchester Academic Health Sciences Centre, University of Manchester, Manchester, United Kingdom M17DN
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Winberg A, Nordström L, Strinnholm Å, Nylander A, Jonsäll A, Rönmark E, West CE. New validated recipes for double-blind placebo-controlled low-dose food challenges. Pediatr Allergy Immunol 2013; 24:282-7. [PMID: 23590418 DOI: 10.1111/pai.12061] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/11/2013] [Indexed: 11/27/2022]
Abstract
Double-blind placebo-controlled food challenges are considered the most reliable method to diagnose or rule out food allergy. Despite this, there are few validated challenge recipes available. The present study aimed to validate new recipes for low-dose double-blind placebo-controlled food challenges in school children, by investigating whether there were any sensory differences between the active materials containing cow's milk, hen's egg, soy, wheat or cod, and the placebo materials. The challenge materials contained the same hypoallergenic amino acid-based product, with or without added food allergens. The test panels consisted of 275 school children, aged 8-10 and 14-15 yr, respectively, from five Swedish schools. Each participant tested at least one recipe. Standardized blinded triangle tests were performed to investigate whether any sensory differences could be detected between the active and placebo materials. In our final recipes, no significant differences could be detected between the active and placebo materials for any challenge food (p > 0.05). These results remained after stratification for age and gender. The taste of challenge materials was acceptable, and no unfavourable side effects related to test materials were observed. In summary, these new validated recipes for low-dose double-blinded food challenges contain common allergenic foods in childhood; cow's milk, hen's egg, soy, wheat and cod. All test materials contain the same liquid vehicle, which facilitates preparation and dosing. Our validated recipes increase the range of available recipes, and as they are easily prepared and dosed, they may facilitate the use of double-blind placebo-controlled food challenges in daily clinical practice.
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Affiliation(s)
- Anna Winberg
- Department of Clinical Sciences, Pediatrics, Umeå University, Umeå, Sweden
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Cochrane SA, Salt LJ, Wantling E, Rogers A, Coutts J, Ballmer-Weber BK, Fritsche P, Fernández-Rivas M, Reig I, Knulst A, Le TM, Asero R, Beyer K, Golding M, Crevel R, Clare Mills EN, Mackie AR. Development of a standardized low-dose double-blind placebo-controlled challenge vehicle for the EuroPrevall project. Allergy 2012; 67:107-13. [PMID: 22092081 DOI: 10.1111/j.1398-9995.2011.02715.x] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND Double-blind placebo-controlled food challenge (DBPCFC) is the gold standard for diagnosing food allergy. Standardized materials and protocols are essential for comparing DBPCFC results for multicentre studies such as EuroPrevall. This required the development and piloting of a standardized vehicle and low-dose protocol for confirming food allergy and determination of minimum eliciting doses (MEDs). METHODS A low-dose DBPCFC protocol was developed, with eight titrated protein doses from 3 μg to 1 g. This was delivered using a simple, microbiologically stable food base incorporating allergenic food ingredients manufactured at three sites and centrally distributed to clinical centres. Allergen blinding was assessed by a professional sensory testing panel using a triangle test. Homogeneity and allergen content were confirmed by ELISA and clinical efficacy was assessed in a pilot study, using celeriac and hazelnut as exemplars. RESULTS Celeriac and hazelnut ingredients were sufficiently blinded in the dessert. The dessert meals were successfully piloted with hazelnut in allergy clinics in Spain, the Netherlands and Italy and with celeriac and hazelnut in Zurich. The challenges elicited a range of subjective and objective reactions ranging in severity from mild itching of the oral mucosa to bronchospasm. CONCLUSIONS A standardized challenge vehicle proven to sufficiently blind processed, powdered hazelnut and celeriac ingredients and that can be reproducibly manufactured has been developed. This pilot study shows that the vehicle is promising for the confirmation of food allergy and determination of MEDs in adults and children with body weight >28.8 kg (approximately 7-11 years old).
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Affiliation(s)
- S A Cochrane
- Unilever Safety and Environmental Assurance Centre, Colworth Science Park, Sharnbrook, Bedfordshire, UK.
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Vlieg-Boerstra BJ, Herpertz I, Pasker L, van der Heide S, Kukler J, Jansink C, Vaessen W, Beusekamp BJ, Dubois AEJ. Validation of novel recipes for double-blind, placebo-controlled food challenges in children and adults. Allergy 2011; 66:948-54. [PMID: 21255039 DOI: 10.1111/j.1398-9995.2010.02539.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND In double-blind, placebo-controlled food challenges (DBPCFCs), the use of challenge materials in which blinding is validated is a prerequisite for obtaining true blinded conditions during the test procedure. Therefore, the aim of this study was to enlarge the available range of validated recipes for DBPCFCs to facilitate oral challenge tests in all age groups, including young children, while maximizing the top dose in an acceptable volume. METHODS Recipes were developed and subsequently validated by a panel recruited by a matching sensory test. The best 30% of candidates were selected to participate in sensory testing using the paired comparison test. RESULTS For young children, three recipes with cow's milk and one recipe with peanut could be validated which may be utilized in DBPCFCs. For children older than 4 years and adults, one recipe with egg, two with peanut, one with hazelnut, and one with cashew nut were validated for use in DBPCFCs. CONCLUSIONS All recipes contained larger amounts of allergenic foods than previously validated. These recipes increase the range of validated recipes for use in DBPCFCs in adults and children.
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Affiliation(s)
- B J Vlieg-Boerstra
- Department Paediatric Pulmonology and Allergy, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands.
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Vassilopoulou E, Douladiris N, Sakellariou A, Cortes SV, Sinaniotis A, Rivas MF, Papadopoulos NG. Evaluation and standardisation of different matrices used for double-blind placebo-controlled food challenges to fish. J Hum Nutr Diet 2010; 23:544-9. [DOI: 10.1111/j.1365-277x.2010.01046.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kuda T, Fujita M, Goto H, Yano T. Effects of retort conditions on ATP-related compounds in pouched fish muscle. Lebensm Wiss Technol 2008. [DOI: 10.1016/j.lwt.2007.02.018] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Sicherer SH, Sampson HA. Peanut allergy: Emerging concepts and approaches for an apparent epidemic. J Allergy Clin Immunol 2007; 120:491-503; quiz 504-5. [PMID: 17689596 DOI: 10.1016/j.jaci.2007.07.015] [Citation(s) in RCA: 216] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2007] [Revised: 07/13/2007] [Accepted: 07/13/2007] [Indexed: 01/14/2023]
Abstract
Peanut allergy is typically lifelong, often severe, and potentially fatal. Because reactions can occur from small amounts, the allergy presents patients with significant obstacles to avoid allergic reactions. In North America and the United Kingdom, prevalence rates among schoolchildren are now in excess of 1%, framing an increasing public health concern and raising research questions about environmental, immunologic, and genetic factors that may influence outcomes of peanut allergy. This review focuses on recent observations that continue to question the influences of maternal and infant diet on outcomes of peanut allergy, and explore how peanut may be uniquely suited to induce an allergic response. We highlight studies that affect current diagnosis, management, and the nature of advice that can be provided to patients, including the utility of diagnostic tests, doses that elicit reactions, characteristics of reactions from exposure, issues of cross-reactivity, concerns about peanut contamination of manufactured goods, and the natural course of the allergy. Clinical, molecular, and immunologic advances are reviewed, highlighting research discoveries that influence strategies for improved diagnosis, prevention, and treatment. Among the therapeutic strategies reviewed are sublingual and oral immunotherapy, anti-IgE, Chinese herbal medicine, and vaccine strategies.
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Affiliation(s)
- Scott H Sicherer
- Elliot and Roslyn Jaffe Food Allergy Institute, Division of Allergy and Immunology, Department of Pediatrics, Mount Sinai School of Medicine, New York, NY, USA.
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Hazard characterisation in food allergen risk assessment: The application of statistical approaches and the use of clinical data. Food Chem Toxicol 2007; 45:691-701. [DOI: 10.1016/j.fct.2006.09.005] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2005] [Accepted: 09/12/2006] [Indexed: 11/20/2022]
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10
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Current World Literature. Curr Opin Allergy Clin Immunol 2005. [DOI: 10.1097/01.all.0000168798.22110.c9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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van Odijk J, Ahlstedt S, Bengtsson U, Borres MP, Hulthén L. Double-blind placebo-controlled challenges for peanut allergy the efficiency of blinding procedures and the allergenic activity of peanut availability in the recipes. Allergy 2005; 60:602-5. [PMID: 15813803 DOI: 10.1111/j.1398-9995.2005.00666.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND A firm diagnosis of double-blind placebo-controlled food challenge (DBPCFC) would facilitate the diagnosis in patients with uncertain history of reaction. Guidelines are lacking for an upper provoking dose and how to hide high concentrations of peanuts. AIM To develop and evaluate a double-blind recipe with minimum 10% of peanut. To compare the recipe with published recipes regarding blindness, taste, texture and immunoglobulin (Ig)E antibody binding to peanut. METHODS A recipe (I) with 10% of peanut was developed evaluated and used in DBPCFC. The challenges were followed by development of a concentrated recipe (II) (15% peanut, 25% fat). Recipe II was compared with the only published recipe (III) (11% peanut, 7% fat) regarding taste, texture and availability of peanut. Recipe IV (12% peanut, 10% fat) was developed using the same methods. The binding of IgE in the recipes was measured using an inhibition method. RESULTS During challenges, one patient reacted after 4 g, emphasizing the need for blinding recipes containing high doses of peanut. Evaluation between recipes II and III, only recipe II was regarded as blind by the taste panels. A tenfold lower availability of peanut protein in the recipe II was found at 50% of inhibition. Recipe IV had a better IgE binding that did not differ from the original peanut extract. CONCLUSION The peanut taste and texture can be hidden in a challenge medium. The fat content was important for the availability of the allergenic protein in challenges. The availability of allergens must be taken into consideration when used for DBPCFC.
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