Ara h 2105-124-Specific TH2A Cells Drive Peanut Allergy in DRB1*15:01 Individuals: A Detailed Epitope Analysis
Background: The IgE-mediated CD4 T-cell response to peanut (Arachis hypogaea) is heterogeneous, yet TH2 cells remain central drivers of pathology. This study aimed to dissect this complexity at the epitope level by focusing on the HLA-DRB1*15:01-DRB5*01:01 haplotype. Specifically, we examined how distinct epitope-specific T-cell subsets shape the immunological landscape of peanut allergy in peanut-allergic (PA) […]
Trends in Childhood Anaphylaxis in Singapore: 2015-2022
Background: There has been limited data regarding the incidence of anaphylaxis in Asia. We aim to describe patterns in patient characteristics, triggers and clinical presentation of childhood anaphylaxis in Singapore. Methods: This was a retrospective review of emergency electronic medical records of children with anaphylaxis. Patients with the allergy-related diagnoses of anaphylaxis, angioedema, allergy and […]
Oral immunotherapy using boiled peanuts for treating peanut allergy: An open‐label, single‐arm trial.
Background: Peanut allergy affects 1%–3% of children in Western countries. Boiling peanuts has been demonstrated to result in a hypoallergenic product that may provide a safer way of inducing desensitization in peanut-allergic patients by first inducing tolerance to boiled peanut. We aimed to assess the efficacy and safety of oral immunotherapy (OIT) using sequential doses […]
Prevalence and early‐life risk factors for tree nut sensitization and allergy in young adults.
Background: Tree nut allergy may cause anaphylaxis. There are limited population-based studies on prevalence and early-life risk factors. Methods: We evaluated the prevalence of reported symptoms and allergic sensitization to tree nuts at age 24 years in the BAMSE population-based cohort study and assessed early-life factors associated with the development of tree nut allergy. We […]
Diagnostic accuracy of Ara h 2 for detecting peanut allergy in children.
Background: Specific IgE to Ara h 2 is a diagnostic test for peanut allergy which may reduce the need for double-blind placebo-controlled food challenges (DBPCFC), however guidance for using Ara h 2 in place of DBPCFCs has not been validated. Objective: To prospectively evaluate 1) diagnostic accuracy of previously published Ara h 2 cutoff levels to diagnose […]
ImmunoCAP ISAC in food allergy diagnosis: a systematic review of diagnostic test accuracy
The aim of this systematic review is to assess the diagnostic test accuracy of the component-resolved diagnosis device ImmunoCAP ISAC, compared with oral food challenge. Systematic review reported according to the PRISMA-DTA recommendations. Medline, Embase and Cochrane Library databases were searched from inception to May 2019 and updated in March 2021. We included diagnostic test […]
Peanuts in the air clinical and experimental studies
Background: Allergic reactions to food allergens usually occur after ingestion. However, fear of reactions to airborne peanut is a common concern for people with peanut allergy. There are no scientific reports on severe reactions with airborne peanut allergen. Objective: To investigate the occurrence of allergic reactions in peanut-allergic children undergoing airborne peanut challenge and to determine levels […]
Mechanisms of oral immunotherapy.
Food allergy presents a significant global health concern with up to 10% of the population affected in developed nations and a steadily increasing prevalence. In many cases, particularly with peanut, tree nut and shellfish, food allergy is a lifelong and potentially life-threatening diagnosis. While no 'cure' for IgE-mediated food allergy exists, oral immunotherapy (OIT) is […]
Age at introduction to complementary solid food and food allergy and sensitization: a systematic review and meta‐analysis.
BACKGROUND AND OBJECTIVE: An infant's age at introduction of complementary solids may contribute to food allergy. We aimed to synthesize the literature on the association between age at introduction of complementary solids, excluding milk products, and food allergy and sensitization. DESIGN: We searched the electronic databases PubMed and EMBASE (January 1946-February 2017) using solid food, […]
Asian children living in Australia have a different profile of allergy and anaphylaxis than Australian‐born children: a State‐wide survey.
BACKGROUND: Asian children born in Australia have higher rates of eczema and nut allergy than non-Asian children. However, it is not known whether this country of birth differential exists for other allergies or anaphylaxis risk. OBJECTIVE: We investigated the influence of maternal and child's country of birth on the prevalence of parent-reported eczema, asthma, food […]