food hypersensitivity/protease

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Murine model of food allergy after epicutaneous sensitization: role of mucosal mast cell protease-1.

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OBJECTIVE Studies of the pathological mechanisms of food allergy have been impeded by the lack of relevant animal models. The purpose of this study was to develop a physiological model of food allergy that was not dependent on immunostimulatory adjuvants. METHODS Balb/c mice were epicutaneously

Dietary Fructo-Oligosaccharides Attenuate Early Activation of CD4+ T Cells Which Produce both Th1 and Th2 Cytokines in the Intestinal Lymphoid Tissues of a Murine Food Allergy Model.

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BACKGROUND Fructo-oligosaccharides (FOS) are prebiotic agents with immunomodulatory effects involving improvement of the intestinal microbiota and metabolome. In this study, we investigated the cellular mechanisms through which FOS modulate intestinal antigen-specific CD4+ T cell responses in food

Early life exposure to bisphenol A investigated in mouse models of airway allergy, food allergy and oral tolerance.

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The impact of early life exposure to bisphenol A (BPA) through drinking water was investigated in mouse models of respiratory allergy, food allergy and oral tolerance. Balb/c mice were exposed to BPA (0, 10 or 100 μg/ml), and the offspring were intranasally exposed to the allergen ovalbumin (OVA).

Epicutaneous administration of papain induces IgE and IgG responses in a cysteine protease activity-dependent manner.

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BACKGROUND Epicutaneous sensitization to allergens is important in the pathogenesis of not only skin inflammation such as atopic dermatitis but also "atopic march" in allergic diseases such as asthma and food allergies. We here examined antibody production and skin barrier dysfunction in mice

(Xeno)estrogen regulation of food allergy.

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Food allergy and other types of allergies are becoming epidemic in both the developed and developing countries. A large amount of information is available in literature that (xeno)estrogens can regulate the immune response in general, and the development of allergy in particular; however, the effect

Mast cell heterogeneity underlies different manifestations of food allergy in mice.

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Food can trigger a diverse array of symptoms in food allergic individuals from isolated local symptoms affecting skin or gut to multi-system severe reactions (systemic anaphylaxis). Although we know that gastrointestinal and systemic manifestations of food allergy are mediated by tissue mast cells

Animal models in food allergy: assessment of allergenicity and preventive activity of infant formulas.

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Food allergies occur in about 5-10% of the overall infant and small-child population. Cow's milk protein allergy (CMPA) is the most common in young infants, with a 2-4% incidence. When breastfeeding is not possible, hypoallergenic (HA) cow's milk based formulas are usually given during the first

Skin inflammation exacerbates food allergy symptoms in epicutaneously sensitized mice.

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BACKGROUND Cutaneous exposure to food antigen through impaired skin barrier has been shown to induce epicutaneous sensitization, thereby causing IgE-mediated food allergies. OBJECTIVE We examined whether skin barrier impairment following epicutaneous sensitization exacerbates food

Quail egg homogenate alleviates food allergy induced eosinophilic esophagitis like disease through modulating PAR-2 transduction pathway in peanut sensitized mice.

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The present pharmacotherapy for eosinophilic esophagitis (EoE) fundamentally depend on inhaled corticosteroids. Despite the fact that oral intake of topical steroids can be successful in restricting EoE-related inflammation, there are concerns with respect to the long term utilization of steroids,

Sphingosine-kinase 1 and 2 contribute to oral sensitization and effector phase in a mouse model of food allergy.

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BACKGROUND Sphingosine-1-phosphate (S1P) influences activation, migration and death of immune cells. Further, S1P was proposed to play a major role in the induction and promotion of allergic diseases. However, to date only limited information is available on the role of S1P in food

Eppikajutsuto Protects against Food Allergy Induced by Ovalbumin in a Murine Model.

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BACKGROUND Currently, there are no efficient medications available for the prevention and treatment of food allergy (FA). Herbal medicines, including traditional Japanese Kampo medicines (TJKMs), are promising therapeutic drugs. METHODS We screened 18 TJKMs for treatment of FA symptoms in a mouse FA

Remission of food allergy by the Janus kinase inhibitor ruxolitinib in mice.

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To clarify the role of Janus kinase (JAK) in and the efficacy of JAK inhibitors on food allergy, we investigated the effect of the clinically available JAK inhibitor ruxolitinib on mouse food allergy and the functions of cultured mast cells in vitro. Anaphylactic symptoms including diarrhea and

Chapter 23: Food allergy.

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The onset of IgE-mediated food allergy is usually within minutes to 2 hours of food ingestion. Risk factors for fatal food-induced anaphylaxis include presence of asthma (which is a risk factor for anaphylaxis in general), failure to use epinephrine autoinjectors promptly, history of prior severe

Food allergy alters jejunal circular muscle contractility and induces local inflammatory cytokine expression in a mouse model.

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BACKGROUND We hypothesized that food allergy causes a state of non-specific jejunal dysmotility. This was tested in a mouse model. METHODS Balb/c mice were epicutaneously sensitized with ovalbumin and challenged with 10 intragastric ovalbumin administrations every second day. Smooth muscle

Food allergy: Diagnosis and treatment.

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Immunoglobulin E-mediated food reactions usually develop within minutes of food ingestion. Although most reactions are not life-threatening, fatalities do occur. Risk factors for fatal food-induced anaphylaxis include the presence of asthma (a risk factor for anaphylaxis in general), failure to use

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