food hypersensitivity/tyrosine

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Nitration of the egg-allergen ovalbumin enhances protein allergenicity but reduces the risk for oral sensitization in a murine model of food allergy.

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BACKGROUND Nitration of proteins on tyrosine residues, which can occur due to polluted air under "summer smog" conditions, has been shown to increase the allergic potential of allergens. Since nitration of tyrosine residues is also observed during inflammatory responses, this modification could

Food allergy herbal formula 2 protection against peanut anaphylactic reaction is via inhibition of mast cells and basophils.

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BACKGROUND Mast cells and basophils are key effector cells of IgE-mediated anaphylactic reactions. The Chinese herbal formula, food allergy herbal formula 2 (FAHF-2), protects against peanut anaphylaxis in mice. However, the mechanisms underlying this effect are not fully elucidated. OBJECTIVE To

Tyrosine kinase inhibitor sunitinib relieves systemic and oral antigen-induced anaphylaxes in mice.

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BACKGROUND Systemic and oral antigen-induced anaphylaxes are mediated by immunoglobulin (Ig) E and mast cells, but there is no satisfactory treatment for the life-threatening allergic reaction. We investigated the potential of the multitargeted receptor tyrosine kinase inhibitor sunitinib to relieve

Identification and fine mapping of IgG and IgE epitopes in ovomucoid.

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Ovomucoid is a major allergen in hen egg white which causes a serious IgE-mediated food allergy reaction. This study determined eight IgG epitopes, 5-11 amino acids in length, and nine IgE epitopes, 5-16 amino acids in length, within the primary sequence in ovomucoid using arrays of overlapping

A Novel Mutation in the IL6R Gene Identified in a Family with Asthma Patients

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Background: Allergic diseases, including asthma, atopic dermatitis, allergic rhinitis, and food allergies, are caused by both environmental and genetic factors. The allergic condition, where genetic factors make up the largest proportion (up to 95%), is asthma. Aim: To

Adjuvants in allergen-specific immunotherapy: modulating and enhancing the immune response.

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Allergen-specific immunotherapy (AIT) is the only treatment that may affect the natural course of allergic diseases such as allergic asthma, allergic rhinitis, and IgEmediated food allergy. Adjuvants are used to induce a quicker, more potent, and longer-lasting AIT immune response. Up to now, only

Notch ligand Delta-like1 enhances degranulation and cytokine production through a novel Notch/Dok-1/MAPKs pathway in vitro.

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Food allergy includes sensitization phase and effect phase, and effect cells degranulate and secrete cytokines in the effect phase, causing allergic clinical symptoms. We have demonstrated that Notch signaling plays an important role in the sensitization phase, but its role in effect phases still

Nutritional evaluation of protein hydrolysate formulas in healthy term infants: plasma amino acids, hematology, and trace elements.

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BACKGROUND Protein hydrolysate formulas are used for infants with food allergy. Most studies of such formulas focus on their effect on allergy and rarely evaluate their capacity to provide normal nutritional status. OBJECTIVE We compared plasma aminograms, serum urea nitrogen, and trace element

Crosslinking of peanut allergen Ara h 2 by polyphenol oxidase: digestibility and potential allergenicity assessment.

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BACKGROUND Peanut is one of the eight major food allergens. Its allergen, Ara h 2, can be recognized by over 90% of serum IgE samples from peanut-allergic patients. Therefore, reducing the allergenicity of Ara h 2 is especially important. RESULTS In the present study, polyphenol oxidase (PPO), a

The safety and efficacy of sublingual and oral immunotherapy for milk allergy.

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BACKGROUND Oral immunotherapy (OIT) and sublingual immunotherapy (SLIT) are potential therapies for food allergy, but the optimal method of administration, mechanism of action, and duration of response remain unknown. OBJECTIVE We sought to explore the safety and efficacy of OIT and SLIT for the

Asthma and allergic symptoms and type 1 diabetes-related autoantibodies in 2.5-yr-old children.

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A dominance of Th2 cytokine pattern is associated with allergic diseases, whereas a Th1 pattern has been reported in autoimmune type 1 diabetes (T1D). The Th1/Th2 paradigm has led to the interest in the relationship between these diseases. To investigate the association between atopic diseases,

Suppression of phospholipase Cγ1 phosphorylation by cinnamaldehyde inhibits antigen-induced extracellular calcium influx and degranulation in mucosal mast cells.

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Antigen-IgE-mediated mucosal mast-cell activation is critical in the development of food allergies. Cinnamaldehyde, a major constituent of Cinnamomi cortex, dose-dependently inhibited the antigen-IgE-induced degranulation of mucosal-type bone-marrow derived mast cells (mBMMCs) and RBL-2H3 cells.

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