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  1. Article ; Online: Real-life evaluation of tolerance to foods with precautionary allergen labeling in children with IgE-mediated food allergy.

    Graham, François / Benhamou, Avigael H / Liu, Yan Jiao / Caubet, Jean-Christoph / Eigenmann, Philippe A

    Allergy

    2023  Volume 78, Issue 9, Page(s) 2558–2561

    MeSH term(s) Child ; Humans ; Allergens/analysis ; Food Hypersensitivity ; Food ; Immunoglobulin E ; Food Labeling
    Chemical Substances Allergens ; Immunoglobulin E (37341-29-0)
    Language English
    Publishing date 2023-07-26
    Publishing country Denmark
    Document type Letter ; Research Support, Non-U.S. Gov't
    ZDB-ID 391933-x
    ISSN 1398-9995 ; 0105-4538
    ISSN (online) 1398-9995
    ISSN 0105-4538
    DOI 10.1111/all.15821
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Native and denatured egg white protein IgE tests discriminate hen's egg allergic from egg-tolerant children.

    Benhamou Senouf, Avigael H / Borres, Magnus P / Eigenmann, Philippe A

    Pediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology

    2015  Volume 26, Issue 1, Page(s) 12–17

    Abstract: Background: Accurate diagnosis of egg allergy by IgE testing is challenged by a large number of atopic subjects sensitized, but clinically tolerant to eggs. In addition, discrimination between allergy to raw only, or raw and cooked egg allergy is ... ...

    Abstract Background: Accurate diagnosis of egg allergy by IgE testing is challenged by a large number of atopic subjects sensitized, but clinically tolerant to eggs. In addition, discrimination between allergy to raw only, or raw and cooked egg allergy is important. In this study, we investigate the diagnostic performance of IgE tests to native and denatured egg proteins.
    Methods: According to food challenges and clinical tolerance, study subjects were randomized to the following groups: (Group A) sensitized but clinically tolerant to egg, (Group B) allergic to raw egg only, or (Group C) allergic to raw and cooked egg. Serum-specific IgE to native or reduced and oxidized egg white, ovomucoid, and ovalbumin were measured.
    Results: Increasing titers of specific IgE to the various proteins were found according to the degree of the egg allergy. Cut-off values for IgE testing to native egg could be determined to distinguish between raw egg allergic and egg-tolerant subjects (1.6 kU/l), as well as raw and cooked egg allergic and egg-tolerant subjects (4.1 kU/l). ROC curves analysis showed that native ovalbumin was the best test for the diagnosis of allergy to raw and cooked egg, and native ovomucoid was best to distinguish between allergy to raw only, and allergy to raw and cooked egg. Sequential testing improved the diagnosis, when in addition to IgE to native egg white, IgE to native ovalbumin was tested for the diagnosis of raw and cooked egg allergy, and IgE to native ovomucoid for the discrimination between allergy to raw only, or to raw and cooked eggs.
    Conclusion: The diagnosis of egg allergy can be significantly improved using a panel of IgE tests to egg proteins in the native or denatured form. The accuracy can be improved using combined IgE testing.
    MeSH term(s) Allergens/adverse effects ; Allergens/immunology ; Child ; Child, Preschool ; Diagnosis, Differential ; Egg Hypersensitivity/diagnosis ; Egg Hypersensitivity/immunology ; Egg Proteins/chemistry ; Egg Proteins/immunology ; Female ; Humans ; Immune Tolerance ; Immunoglobulin E/metabolism ; Infant ; Male ; Protein Denaturation ; Raw Foods/adverse effects ; Serologic Tests/methods
    Chemical Substances Allergens ; Egg Proteins ; Immunoglobulin E (37341-29-0)
    Language English
    Publishing date 2015-02
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1057059-7
    ISSN 1399-3038 ; 0905-6157 ; 0906-5784
    ISSN (online) 1399-3038
    ISSN 0905-6157 ; 0906-5784
    DOI 10.1111/pai.12317
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    Zs.A 3096: Show issues Location:
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  3. Article ; Online: Correlation between specific immunoglobulin E levels and the severity of reactions in egg allergic patients.

    Benhamou, Avigael H / Zamora, Samuel A / Eigenmann, Philippe A

    Pediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology

    2008  Volume 19, Issue 2, Page(s) 173–179

    Abstract: Different studies proposed specific immunoglobulin E (IgE) cut-off levels for the diagnosis of egg allergy. Little is known if IgE titres could be helpful for prediction of the severity of the reaction. The aim of this study was to determine whether IgE ... ...

    Abstract Different studies proposed specific immunoglobulin E (IgE) cut-off levels for the diagnosis of egg allergy. Little is known if IgE titres could be helpful for prediction of the severity of the reaction. The aim of this study was to determine whether IgE titres are associated with the severity of the reaction during a standardized egg challenge. We reviewed data obtained during oral challenge tests to egg performed between 2003 and 2005, and attributed a clinical score to the positive reactions. Serum specific IgE levels were analysed in relation with the severity of the reaction. We analysed data from 51 oral food challenges to egg, raw or cooked. Sixteen challenges (31%) were negative and 35 (69%) were positive of which 13 challenges (37% of positive reactions) elicited a severe reaction. IgE levels in our patients ranged from undetectable to 14.90 kU/l. We could determine a cut-off level of 8.20 kU/l for a 90% probability of clinical reactivity. IgE titres were statistically significantly different between the patients with absent, mild and moderate or severe reaction. Patients with negative challenge had IgE levels between 0.35 and 6.41 kU/l (median 1.17), those with mild and moderate reaction had IgE levels ranging from 0.35 to 14.90 (median 2.47) and patients with severe reactions had IgE between 1.18 and 11.00 (median 3.70) (p = 0.006). Our results show a correlation between IgE titres and the severity of the clinical reaction to egg. IgE titres may help to determine the potential risk of a reaction to eggs.
    MeSH term(s) Child ; Child, Preschool ; Cooking ; Egg Hypersensitivity/blood ; Egg Hypersensitivity/diagnosis ; Egg Hypersensitivity/immunology ; Female ; Humans ; Immunoglobulin E/blood ; Immunologic Tests ; Infant ; Male ; Predictive Value of Tests ; Sensitivity and Specificity ; Severity of Illness Index
    Chemical Substances Immunoglobulin E (37341-29-0)
    Language English
    Publishing date 2008-03
    Publishing country England
    Document type Journal Article
    ZDB-ID 1057059-7
    ISSN 1399-3038 ; 0905-6157 ; 0906-5784
    ISSN (online) 1399-3038
    ISSN 0905-6157 ; 0906-5784
    DOI 10.1111/j.1399-3038.2007.00602.x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: An overview of cow's milk allergy in children

    Benhamou, Avigael H. / Schäppi Tempia, Michela G. / Belli, Dominique C. / Eigenmann, Philippe A.

    Swiss medical weekly

    2009  Volume 139, Issue 21/22, Page(s) 300

    Language German
    Document type Article
    ZDB-ID 2036179-8
    ISSN 1424-7860
    Database Current Contents Medicine

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    Ua VI Zs.152: Show issues Location:
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  5. Article: An overview of cow's milk allergy in children.

    Benhamou, Avigael H / Schäppi Tempia, Michela G / Belli, Dominique C / Eigenmann, Philippe A

    Swiss medical weekly

    2009  Volume 139, Issue 21-22, Page(s) 300–307

    Abstract: Food allergies have increased over the past decade and are an important problem in daily clinical practice. They affect 6% of children and 3 to 4% of adults. Furthermore, around 20% of the population falsely believe that they are allergic to some foods ... ...

    Abstract Food allergies have increased over the past decade and are an important problem in daily clinical practice. They affect 6% of children and 3 to 4% of adults. Furthermore, around 20% of the population falsely believe that they are allergic to some foods and follow unnecessarily restrictive diets. For infants, the problem is even more acute as they need appropriate feeding in order to achieve normal growth and avoid bone and metabolic problems. Although any food can cause a reaction, few foods are responsible for the large majority of the symptoms: i.e., milk, eggs, wheat, peanuts, nuts, fish, shellfish. Of these, cow's milk allergy is frequently suspected in small children. It can be responsible of a variety of symptoms and can be caused by IgE-mediated or non-IgE-mediated reactions. The diagnosis relies on a detailed history, skin tests, laboratory tests, an elimination diet and food challenges. The overall natural evolution of the disease is favourable with most patients achieving tolerance to milk by the age of five years, but some patients will remain allergic for life.
    MeSH term(s) Antibodies, Anti-Idiotypic/immunology ; Child ; Global Health ; Humans ; Immunoglobulin E/immunology ; Incidence ; Milk Hypersensitivity/epidemiology ; Milk Hypersensitivity/immunology ; Prevalence
    Chemical Substances Antibodies, Anti-Idiotypic ; Immunoglobulin E (37341-29-0)
    Language English
    Publishing date 2009-04-15
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2036179-8
    ISSN 1424-3997 ; 1424-7860
    ISSN (online) 1424-3997
    ISSN 1424-7860
    DOI smw-12258
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  6. Article ; Online: Exhaled nitric oxide decreases after positive food-allergen challenge.

    Benhamou, Avigael H / Koehli, Alice / Rochat, Isabelle / Inci, Demet / Moeller, Alexander / Taramarcaz, Philip / Lauener, Roger P / Eigenmann, Philippe A

    Clinical and translational allergy

    2011  Volume 1, Issue 1, Page(s) 14

    Abstract: Background: Exhaled nitric oxide (FeNO) is a well described marker of airway inflammation in asthma and is also known to increase after chronic exposure to inhaled allergens. It is not known whether monitoring FeNO could be useful during food challenges ...

    Abstract Background: Exhaled nitric oxide (FeNO) is a well described marker of airway inflammation in asthma and is also known to increase after chronic exposure to inhaled allergens. It is not known whether monitoring FeNO could be useful during food challenges to detect early or subclinical reactions.
    Methods: Forty children aged 3 to 16 years undergoing an allergen-food challenge at two centres were prospectively recruited for this study. FeNO was assessed before and repeatedly after the food-challenge.
    Results: Data were obtained from a total of 53 challenges (16 positive, 37 negative) and were compared between the two groups. Half of the patients with a positive food challenge exhibited clinical upper respiratory symptoms. The FeNO significantly decreased in 7 of 16 patients with a positive challenge test within 60 to 90 minutes after the first symptoms of an allergic reaction.
    Conclusion: Our results show a significant decrease in FeNO after a positive food challenge suggesting involvement of the lower airways despite absence of clinical and functional changes of lower airways. Prospective blinded studies are needed to confirm these results.
    Language English
    Publishing date 2011-11-28
    Publishing country England
    Document type Journal Article
    ZDB-ID 2630865-4
    ISSN 2045-7022 ; 2045-7022
    ISSN (online) 2045-7022
    ISSN 2045-7022
    DOI 10.1186/2045-7022-1-14
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  7. Article ; Online: Exhaled nitric oxide decreases after positive food-allergen challenge

    Benhamou Avigael H / Koehli Alice / Rochat Isabelle / Inci Demet / Moeller Alexander / Taramarcaz Philip / Lauener Roger P / Eigenmann Philippe A

    Clinical and Translational Allergy, Vol 1, Iss 1, p

    2011  Volume 14

    Abstract: Abstract Background Exhaled nitric oxide (FeNO) is a well described marker of airway inflammation in asthma and is also known to increase after chronic exposure to inhaled allergens. It is not known whether monitoring FeNO could be useful during food ... ...

    Abstract Abstract Background Exhaled nitric oxide (FeNO) is a well described marker of airway inflammation in asthma and is also known to increase after chronic exposure to inhaled allergens. It is not known whether monitoring FeNO could be useful during food challenges to detect early or subclinical reactions. Methods Forty children aged 3 to 16 years undergoing an allergen-food challenge at two centres were prospectively recruited for this study. FeNO was assessed before and repeatedly after the food-challenge. Results Data were obtained from a total of 53 challenges (16 positive, 37 negative) and were compared between the two groups. Half of the patients with a positive food challenge exhibited clinical upper respiratory symptoms. The FeNO significantly decreased in 7 of 16 patients with a positive challenge test within 60 to 90 minutes after the first symptoms of an allergic reaction. Conclusion Our results show a significant decrease in FeNO after a positive food challenge suggesting involvement of the lower airways despite absence of clinical and functional changes of lower airways. Prospective blinded studies are needed to confirm these results.
    Keywords Allergen challenge ; exhaled Nitric oxide ; food allergy ; food challenge ; Immunologic diseases. Allergy ; RC581-607 ; Specialties of internal medicine ; RC581-951 ; Internal medicine ; RC31-1245 ; Medicine ; R ; DOAJ:Allergy and Immunology ; DOAJ:Medicine (General) ; DOAJ:Health Sciences
    Subject code 610
    Language English
    Publishing date 2011-11-01T00:00:00Z
    Publisher BioMed Central
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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