Threshold dose for peanut: Risk characterization based upon published results from challenges of peanut-allergic individuals
Population thresholds for peanut are unknown. However, lowest- and no-observed adverse effect levels (LOAELs and NOAELs) are published for an unknown number of peanut-allergic individuals. Publications were screened for LOAELs and NOAELs from blinded, low-dose oral challenges. Data were obtained from 185 peanut-allergic individuals (12 publications). Data were analyzed by interval-censoring survival analysis and three […]
Peanut and tree nut consumption during pregnancy and allergic disease in children—should mothers decrease their intake? Longitudinal evidence from the Danish National Birth Cohort
Background: The relation between maternal peanut intake during pregnancy and allergic disease development in children has been controversial. Objective: We used data from the Danish National Birth Cohort to examine associations between maternal peanut and tree nut intake during pregnancy and allergic outcomes in children at 18 months and 7 years of age. Methods: We […]
Antigen-fixed leukocytes tolerize th2 responses in mouse models of allergy
Allergic diseases; including asthma and food allergies; are an increasing health concern. Immunotherapy is an effective therapeutic approach for many allergic diseases but requires long dose escalation periods and has a high risk of adverse reactions; particularly in food allergy. New methods to safely induce Ag-specific tolerance could improve the clinical approach to allergic disease. […]
The eliciting dose of peanut in double-blind; placebo-controlled food challenges decreases with increasing age and specific IgE level in children and young adults.
Background: Several risk factors for severe anaphylactic reactions to food in daily life are known. However; to date; it is not possible to predict the severity of allergic reactions to food in the individual patient with accuracy. Some studies show that a history of severe reactions is associated with a lower eliciting dose in double-blind; […]
Efficacy and safety of high-dose peanut oral immunotherapy with factors predicting outcome.
Background: Peanut allergy is severe and rarely resolves. Objective: To test the efficacy and safety of a new oral immunotherapy (OIT) protocol for peanut allergy. Method Twenty-two peanut-allergic children underwent oral challenge. OIT was administered by gradual updosing with 2-weekly increments (8-38 weeks) to 800 mg of protein (5 peanuts/day) followed by 30-week maintenance. Oral […]
Skin prick testing and peanut-specific IgE can predict peanut challenge outcomes in preschoolchildren with peanut sensitization.
BACKGROUND: The rise in peanut allergy is a source of considerable burden in the community. A growing number of pre-schoolchildren have been identified as peanut sensitized in the course of investigation of other allergic conditions. Although many have never knowingly ingested peanuts and their clinical reactivity is not known; it has been common practice to […]
A randomized controlled study of peanut oral immunotherapy: Clinical desensitization and modulation of the allergic response
Abstract BACKGROUND: Open-label oral immunotherapy (OIT) protocols have been used to treat small numbers of patients with peanut allergy. Peanut OIT has not been evaluated in double-blind; placebo-controlled trials. OBJECTIVE: To investigate the safety and effectiveness of OIT for peanut allergy in a double-blind; placebo-controlled study. METHODS: In this multicenter study; children ages 1 to […]
Single-tree nut immunotherapy attenuates allergic reactions in mice with hypersensitivity to multiple tree nuts
BACKGROUND: Allergic reactions to tree nuts are often severe and are outgrown in less than 10% of diagnosed patients. OBJECTIVES: To determine whether treatment of underlying tree nut sensitization will prevent allergic reactions to cross-reacting tree nuts and to determine the effects of single-tree nut immunotherapy on true multi-tree nut sensitization. METHODS: Cross-reactivity model: Cashew-sensitized […]
Enzymatic Treatment of Peanut Kernels to Reduce Allergen Levels.
Abstract: This study investigated the use of enzymatic treatment to reduce peanut allergens in peanut kernels as affect by processing conditions. Two major peanut allergens; Ara h 1 and Ara h 2; were used as indicators of process effectiveness. Enzymatic treatment effectively reduced Ara h 1 and Ara h 2 in roasted peanut kernels by […]
Influence of Processing on the Allergenic Properties of Pistachio Nut Assessed in Vitro
Pistachio (Pistacia vera) is a tree nut that has been reported to cause IgE-mediated allergic reactions. This study was undertaken to investigate the distinctions between different cultivars of pistachio nut and the influence of different processing on the IgE-binding capacity of whole pistachio protein extracts. The influence of different processes on allergenicity was investigated using […]